The fourth season of the American television comedy series How I Met Your Mother premiered on September 22, 2008 and concluded on May 18, 2009. It consisted of 24 episodes, each running approximately 22 minutes in length. CBS broadcast the fourth season on Monday nights at 8:30 pm in the United States. The complete fourth season was released on Region 1 DVD on September 29, 2009. In the United Kingdom it began airing via E4 from Thursday, December 10 weekly. To date, it is the only season of the series to be nominated for the Primetime Emmy Award for Outstanding Comedy Series.
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4 - 1Do I Know You? Sep. 22, 2008
4 - 2The Best Burger in New York Sep. 29, 2008
4 - 3I Heart NJ Oct. 06, 2008
4 - 4Intervention Oct. 13, 2008
4 - 5Shelter Island Oct. 20, 2008
4 - 6Happily Ever After Nov. 03, 2008
4 - 7Not a Father's Day Nov. 10, 2008
4 - 8Woooo! Nov. 17, 2008
4 - 9The Naked Man Nov. 24, 2008
4 - 10The Fight Dec. 08, 2008
4 - 11Little Minnesota Dec. 15, 2008
4 - 12Benefits Jan. 12, 2009
4 - 13Three Days of Snow Jan. 19, 2009
4 - 14The Possimpible Feb. 02, 2009
4 - 15The Stinsons Mar. 02, 2009
4 - 16Sorry, Bro Mar. 09, 2009
4 - 17The Front Porch Mar. 16, 2009
4 - 18Old King Clancy Mar. 23, 2009
4 - 19Murtaugh Mar. 30, 2009
4 - 20Mosbius Designs Apr. 13, 2009
4 - 21The Three Days Rule Apr. 27, 2009
4 - 22Right Place, Right Time May. 04, 2009
4 - 23As Fast as She Can May. 11, 2009
4 - 24The Leap May. 18, 2009