1. AFI (35) AFI has been one of my favorites since I saw them live a couple years ago. Before then I didn't really think they were that great having only heard Girl's Not Grey and The Leaving Song pt 2 but they have so many better songs and they're amazing live.
2. Pink Floyd (31) Pink Floyd was one of the first classic rock artists I really started listening to. They definitely get more plays because of the interesting variety of their songs and the unexplainable fact that Any Colour You Like is my most played song, but I do still like them a lot.
T3. Green Day (29) I always sort of liked Green Day but then American Idiot came out and I really started listening to them a lot more. They're definitely my favorite of the three bands tied for third most plays right now.