That was over 10 years ago in 2011.
Today he is 41, and has starred in 25 movies in total, 10 since Bad Teacher was released.
In Bad Teacher, I think Jason Segel looks:
Bad Teacher scores 5.4 out of 10 on The Movie Database.
Jason Segel's first acting role was as 'Matt' in Can't Hardly Wait, released in 1998 when he was 18.