Pandora Radio
Oh my goodness... I am in love! I'm sure I'm the last person to have found Pandora Internet Radio, but it's the best thing EVER! If you haven't tried it out, you must! You can define your "radio stations" and it comes up with music you'd like based on the style of the musicians you listed. It's just brilliant. No more having to bring my CDs in or worry about setting up my MP3 docking center here at work. It's fantabulous!