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VIDEO: Watch Neil Patrick Harris & Jason Segel's Hilarious LES MIS Showdown!

Last night on BravoTV's "Inside the Actors Studio," the cast of "How I Met Your Mother" sat down with host James Lipton to talk about the end of their long-running comedy on CBS.

Towards the end of the evening, an audience member requested a performance of "Confrontation" from the Broadway musical "Les Miserables." HIMYM stars Jason Segel and Neil Patrick Harris, who share a mutual love for the theater and had previously given an impromptu performance of the number on 2006's "The Megan Mullally Show", immediately broke out into song and gave Ramin Karimloo and Will Swenson a run for their money!

Check out the impromptu performance below!

Cameron Mackintosh's acclaimed new production of Alain Boublil & Claude-Michel Schönberg's Tony Award-winning musical masterpiece Les Miserables opened on Sunday, March 23rd at Broadway's Imperial Theatre.

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