Overview
This marked the 400th episode of the series, making it the longest running show in ABC's history.
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18 - 1October 7, 2007 October 07, 2007 -
18 - 2October 14, 2007 October 14, 2007 -
18 - 3October 21, 2007 October 21, 2007 -
18 - 4October 28, 2007 October 28, 2007
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18 - 5November 4, 2007 November 04, 2007
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18 - 6November 11, 2007 November 11, 2007
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18 - 7December 2, 2007 December 02, 2007
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18 - 8December 9, 2007 December 09, 2007
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18 - 9December 16, 2007 December 16, 2007
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18 - 10January 6, 2008 January 06, 2008
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18 - 11January 13, 2008 January 13, 2008
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18 - 12January 27, 2008 January 27, 2008
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18 - 13Top 10 Practical Joke Countdown February 10, 2008
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18 - 14February 17, 2008 February 17, 2008
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18 - 15March 2, 2008 March 02, 2008
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18 - 16March 9, 2008 March 09, 2008
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18 - 17March 16, 2008 March 16, 2008
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18 - 18April 6, 2008 April 06, 2008
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18 - 19April 13, 2008 April 13, 2008
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18 - 20May 4, 2008 (400th Episode) May 04, 2008
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18 - 21May 11, 2008 May 11, 2008 -
18 - 22May 16, 2008 (1) May 16, 2008 -
18 - 23May 16, 2008 (2) May 16, 2008
