'How I Met Your Mother': Jason Segel is pumped for 100's musical number

jason-segel-himym-320.jpgWhat is Jason Segel's Marshall up to in Monday's 100th episode of "How I Met Your Mother"?

"I'm doing a little singing and dancing," says Segel in the clip below. "I'm pretty excited about it ... It's a big grand, grand musical number, so we'll all be [performing] together, which is exciting, yeah. So no one will look dumb on their own."

Oh, just watch the clip, 'cause it'll make you laugh. Jason even comments on Jon and Kate...


"How I Met Your Mother"s' 100th episode airs Monday (Jan. 11) at 8 p.m. on CBS.


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Photo credit: CBS