I haven't bothered to read all of the other comments but I'm sure it must have been stated before -- this is a completely mediocre comedy that is simply yet another attempt by Hollywood to ride on the coattails of much better films like "Rushmore" and "Napoleon Dynamite." Whereas those films had one or two quirky characters, the hack director of this film decided to up the ante and make ALL but one or two characters "quirky." Was this an attempt to quadruple the laughs? If so, he failed miserably.
I was thinking about a great teenage comedy film from the late '70s/early'80s - "My Bodyguard" which carried a similar theme of a young, loser kid trying to find his place in the world. That film not only appeared a million times more real but it also limited the "quirky" quotient to one character -- Ruth Gordon.
C'mon Hollywood, stop cannibalizing yourself. Let's see something new...