Jason Segel and Paul Rudd, confontation

ok not original- both have done this separately before, but it's sill good. I love when people re-enact scenes from musicals IRL. I remember when my cousin and I would drive and belt out I still Believe from Miss Saigon. I was always Ellen because of these lines:

I will hold you all night
I will make it all
You are safe with me
But I wish you would tell
what you don't want to tell
What your hell must be

http://www.youtube.com/watch?v=oaObyVfxZws

In the spirit of this clip, what are your favorite scenes to re-enact out of context.. or just comment on le clip.