Dead Like Me is one of my favorite shows! Unfortunately, it got cancelled after the 2nd season but don't let that make you think it isn't worth a watch. Heroes is also another fav, though the recent season has been a bit disappointing, imo.
I can see you really getting into Glee and Gilmore Girls. They are both fun and uplifting shows to watch. The humor on Gilmore Girls is so unique, it can't be compared with anything else out there.