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<P style="font-size: 14pt" align="center"><B>UNITED STATES<BR>
SECURITIES AND
EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P style="font-size: 18pt" align="center"><B>FORM 8-K</B>

<P style="font-size: 12pt" align="center"><B>CURRENT REPORT<BR>
Pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P style="font-size: 10pt" align="center"><B>Date of Report (Date of earliest
event reported): March 3, 2009</B>

<P style="font-size: 24pt" align="center"><B>PINNACLE ENTERTAINMENT,
INC.<BR>
</B><FONT style="font-size: 10pt">(Exact name of registrant as
specified in its charter) </FONT>
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  <TD width="32%">&nbsp;</TD>
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 <TR valign="bottom">
  <TD style="border-bottom: #000000 1px solid"><B>Delaware</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>001-13641</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>95-3667491</B></TD>
 </TR>
 <TR valign="top">
  <TD>(State or other Jurisdiction of Incorporation)</TD>
  <TD>&nbsp;</TD>
  <TD>(Commission File Number)</TD>
  <TD>&nbsp;</TD>
  <TD>(IRS Employer Identification No.)</TD>
 </TR>

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  <TD style="border-bottom: #000000 1px solid"><B>3800 Howard Hughes Parkway
Las Vegas, Nevada<BR>
</B></TD>
  <TD>&nbsp;</TD>
  <TD style="border-bottom: #000000 1px solid"><B>89169</B></TD>
 </TR>
 <TR valign="top">
  <TD>(Address of Principal Executive Offices)</TD>
  <TD>&nbsp;</TD>
  <TD>(Zip Code)</TD>
 </TR>

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<P style="font-size: 10pt" align="center">Registrant&#8217;s telephone number,
including area code: <B>(702) 784-7777</B>
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cellpadding="0" width="30%" border="0">

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  <TD style="border-bottom: #000000 1px solid" nowrap><B>N/A<BR>
</B></TD>
 </TR>
 <TR>
  <TD nowrap>(Former name or former address if changed since last report.)</TD>
 </TR>

</TABLE>


<P style="font-size: 10pt" align="left">Check the appropriate box below if the
Form 8-K filing is intended to simultaneously satisfy the filing obligation of
the registrant under any of the following provisions:

<P style="font-size: 10pt" align="left"><FONT face="Wingdings">o</FONT> Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)<BR>
<BR>
<FONT face="Wingdings">o</FONT> Soliciting material pursuant
to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR>
<BR>
<FONT
face="Wingdings">o</FONT> Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


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<P style="display: none; font-size: 10pt" align="center">1
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<P style="font-size: 10pt" align="left"><B>Item&nbsp;2.02. Results of
Operations and Financial Condition.</B>

<P style="font-size: 10pt; text-indent: 3%" align="left">On March&nbsp;3, 2009,
Pinnacle Entertainment, Inc. (the &#8220;Company&#8221;) filed with the
Securities and Exchange Commission a Notification of Late Filing on Form 12b-25
(the &#8220;Notice&#8221;) with respect to the Company&#8217;s Annual Report on
Form 10-K for the fiscal year ended December&nbsp;31, 2008 (the &#8220;Form
10-K&#8221;), stating that it would not be able to timely file the Form 10-K
without unreasonable effort or expense. The Company&#8217;s responses set forth
in the Notice under Part&nbsp;III and Part IV, Question 3 thereof contain
information about the Company&#8217;s results of operations for the fourth
quarter and fiscal year ended December&nbsp;31, 2008, which information is
incorporated herein by reference.

<P style="font-size: 10pt" align="left"><B>Item&nbsp;2.06. Material
Impairments.</B>

<P style="font-size: 10pt; text-indent: 3%" align="left">The responses set
forth in the Notice under Part&nbsp;III and Part&nbsp;IV, Question 3, which
information is incorporated herein by reference, indicate that the Company
expects to record impairment charges related to goodwill,
equity securities indefinite-lived intangible assets, real estate and other long-lived
assets.

<P style="font-size: 10pt" align="left"><B>Item&nbsp;9.01. Financial Statements
and Exhibits.</B>

<P style="font-size: 10pt" align="left">(d)&nbsp;<I>Exhibits.</I>
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  <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit&nbsp;No.</B></TD>
  <TD>&nbsp;</TD>
  <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
 </TR>
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  <TD>&nbsp;</TD>
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 </TR>

 <TR valign="bottom">
  <TD valign="top"><DIV style="margin-left: 0px; text-indent: 0px">Exhibit&nbsp;99.1 </DIV></TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Form&nbsp;12b-25 filed on March&nbsp;3, 2009 by
Pinnacle Entertainment, Inc. with the Securities and Exchange Commission</TD>
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<P style="font-size: 10pt" align="center">&nbsp;

<P style="font-size: 10pt" align="center">2

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<P style="font-size: 10pt" align="center"><B>SIGNATURE</B>

<P style="font-size: 10pt; text-indent: 2%" align="left">Pursuant to the
requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly
authorized. &nbsp;

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  <TD>&nbsp;</TD>
  <TD valign="top" align="left" colspan="2">PINNACLE ENTERTAINMENT, INC.<BR>
(Registrant)</TD>
 </TR>



<TR><TD>&nbsp;</TD></TR>


 <TR valign="bottom">
  <TD valign="top">Date: March&nbsp;3, 2009</TD>
  <TD valign="top" align="left">By: </TD>
  <TD valign="top" align="left" style="border-bottom: 1px solid #000000">/s/ Stephen H. Capp</TD>
 </TR>

 <TR valign="bottom">
  <TD>&nbsp;</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Stephen H. Capp<BR>
Executive Vice President and Chief Financial Officer</TD>
</TR>

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<P style="font-size: 10pt" align="center">&nbsp;

<P style="font-size: 10pt" align="center">3
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<P style="font-size: 10pt" align="center"><B>INDEX TO EXHIBITS</B>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" cellpadding="0" width="100%"
border="0">
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  <TD width="19%">&nbsp;</TD>
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 </TR>
 <TR style="font-size: 10pt" valign="bottom">
  <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit&nbsp;No.</B></TD>
  <TD>&nbsp;</TD>
  <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
 </TR>
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<DIV style="margin-left: 0px; text-indent: 0px">&nbsp;</DIV>
</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">&nbsp;</TD>
 </TR>
 <TR valign="bottom">
  <TD valign="top">
<DIV style="margin-left: 0px; text-indent: 0px">Exhibit&nbsp;99.1 </DIV>
</TD>
  <TD>&nbsp;</TD>
  <TD valign="top" align="left">Form&nbsp;12b-25 filed on March&nbsp;3, 2009 by
Pinnacle Entertainment, Inc. with the Securities and Exchange Commission</TD>
 </TR>
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<P style="font-size: 10pt" align="center">&nbsp;

<P style="font-size: 10pt" align="center">4
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Form 8-K
UNITED STATES
SECURITIES AND
EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to
Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest
event reported): March 3, 2009
PINNACLE ENTERTAINMENT,
INC.
(Exact name of registrant as
specified in its charter)
Delaware
001-13641
95-3667491
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
3800 Howard Hughes Parkway
Las Vegas, Nevada
89169
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number,
including area code:
(702) 784-7777
N/A
(Former name or former address if changed since last report.)
Check the appropriate box below if the
Form 8-K filing is intended to simultaneously satisfy the filing obligation of
the registrant under any of the following provisions:
o
Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)
o
Soliciting material pursuant
to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule
14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule
13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 2.02. Results of
Operations and Financial Condition.
On March 3, 2009,
Pinnacle Entertainment, Inc. (the "Company") filed with the
Securities and Exchange Commission a Notification of Late Filing on Form 12b-25
(the "Notice") with respect to the Company's Annual Report on
Form 10-K for the fiscal year ended December 31, 2008 (the "Form
10-K"), stating that it would not be able to timely file the Form 10-K
without unreasonable effort or expense. The Company's responses set forth
in the Notice under Part III and Part IV, Question 3 thereof contain
information about the Company's results of operations for the fourth
quarter and fiscal year ended December 31, 2008, which information is
incorporated herein by reference.
Item 2.06. Material
Impairments.
The responses set
forth in the Notice under Part III and Part IV, Question 3, which
information is incorporated herein by reference, indicate that the Company
expects to record impairment charges related to goodwill,
equity securities indefinite-lived intangible assets, real estate and other long-lived
assets.
Item 9.01. Financial Statements
and Exhibits.
(d)
Exhibits.
Exhibit No.
Description
Exhibit 99.1
Form 12b-25 filed on March 3, 2009 by
Pinnacle Entertainment, Inc. with the Securities and Exchange Commission
2
SIGNATURE
Pursuant to the
requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.
PINNACLE ENTERTAINMENT, INC.
(Registrant)
Date: March 3, 2009
By:
/s/ Stephen H. Capp
Stephen H. Capp
Executive Vice President and Chief Financial Officer
3
INDEX TO EXHIBITS
Exhibit No.
Description
Exhibit 99.1
Form 12b-25 filed on March 3, 2009 by
Pinnacle Entertainment, Inc. with the Securities and Exchange Commission
4