Agreed. Judd Apatow's later attempt at TV, 'Undeclared', was almost as good and also short-lived. I think that Amy Poehler had a bit part in 'Undeclared' as well as some of the 'Freaks' alumni.
Underdog shows with underdog characters never (supposedly) get enough ratings. Could just be the network execs wanting to continue to bully the geek population.