Played By: Mike O' Malley

Mike O'Malley's performance on Glee is a testament to what the show could have been. Season one showed such promise. It looked like the series was developing into an grounded social satire, rather than the easy album-selling schlock it would become.

The best moments in the first season come as Hummel learned to deal with his gay son, Kurt (Chris Colfer), and Kurt learned how to deal with his father dating.

Early on, Glee showed that a series can be large, brassy, and satirical while still finding emotional truth. Though in later seasons, O'Malley's performance has stuck out like a sore thumb, his work remains a testament to what Glee could've been.