“Know How I Know You’re Gay?” (Knocked Up)

Knocked Up is a movie about the joys and pains of growing up, and it simply wouldn’t be the same without Seth Rogen and Paul Rudd’s great on-screen chemistry. The two actors fitted brilliantly into the role of two young adults who, in their hearts, just want to continue to be teenagers.

The two actors loved to exchange burns, and there’s an entire scene in the movie comprised of nothing but unscripted insults between the two. It’s a lot of fun to watch, and it’s yet another big display of Rogen and Rudd’s improvisational talent.