We are always looking for new and better ways to find new music recommendations, so we were thrilled when we first stumbled across the Genius feature in iTunes a few months ago. It works fairly well, and comes free with the iTunes software on our computer, and the software on our mother's iPhone!
Genius takes the song that you are currently listening to and opens up a world of possibilities. It recommends songs from your library that are similar to the song you are currently listening to, and also recommends songs that you can buy (With one quick click!). It works pretty well too, we're quite impressed!
Quick vote: We have been asked recently about where we get all of our ideas for great music. Although we get tons of great recommendations from readers, friends, and family; we have to give some serious props to Genius. It's genius!