My cable company has a series of channels called Music Choice. I watch/listen to a few of the channels/stations all the time. I'll put on the classical station when I'm reading. I'll put on the Alternative station when I'm cooking. Sometimes I channel surf between the Rock, Arena Rock, and Alternative channels (and a couple of the others, like oldies). I've actually found a few new bands on the Alternative one: Rock Kills Kid, Nightmare of You, Razorlight - to name a few.
There is a feature I'd love to have: a progress indicator. Let me know how much time is left in the currently playing song, just like every MP3 player has today. Let me know that I've got 2 minutes until that Weezer song you seem so fond of is done, so that I can surf around some other channels without missing the next song.
If you could take a feature from one "thing" in your life and add it to something else, what would it be?