Before Seth Rogen was a household name, he starred in this great series that was canceled far too soon. Who knows how many great episodes Apatow and the boys would have churned out had Fox not axed it after 18 episodes. Stand-out episodes include "Eric Visits Again," "Rush and Pledge," and "Hell Week." Check it out on DVD or youtube and watch for appearances by Amy Poehler, Will Ferrell and Jason Segel.
http://en.wikipedia.org/wiki/Undeclared