That was over 14 years ago in 2007.
Today he is 37, and has starred in 48 movies in total, 37 since Superbad was released.
In Superbad, I think Jonah Hill looks:
Superbad scores 7 out of 10 on The Movie Database.
Jonah Hill's first acting role was as 'Bret Hooten' in I Heart Huckabees, released in 2004 when he was 20.