Michael Cera is a funny guy, but I'm not sure if I believe his "oh shucks, I'm totes just this normal teenager uncomfortable in my own skin" routine. Sure, it probably gets him tons of poon, and it worked for him when portraying chubby-cheeked, cousin-loving George Michael Bluth, but don't you get the sense that he hams up his awkwardness during interviews? Especially since he's already demonstrated that he is pretty self-aware about his whole shtick and seems like a smart cookie and generally acts like he knows what he's doing with his cute little hoodies and vaguely Canadian accent.

Here is Cera on Letterman last night, discussing his role in the upcoming film Nick and Nora's Infinite Playlist:

Semi-Personal Anecdote: My bf did props on Nick and Nora's and he said that Michael Cera was always walking around craft services, wondering aloud about a "burning smell." So Cera could be legit and just really confused all the time, and potentially three days away from having a stroke.