1. House - Just the fact they put "Teardrop" as theme is enough for me.
2. Friends - Today I don't like the show that much anymore, but they had some great songs on the episodes, sometimes too good for the scene / situation. Like when they put Interpol's "Untitled" for a moment between Rachel and Joey (here to watch) What a terrible use for a song...
3. Grey's Anatomy - I've got tired of the show but they have a great selection of music.
4. X-Files - I can not remember one song played on any episode, but I remember I had some good surprises
5. Scrubs - I also had good surprises on Scrubs episodes. I think Zach Braff always manage to put the things he likes, The Shins and Coldplay for exemple, ever project he's in.