I was contemplating buying another Chumby for internet radio in my office. It's a great device, but for $200 you can buy a netbook and the speakers on the Chumby leave a little to be desired.
Enter Livio Radio. This is a (relatively) inexpensive internet stereo at $150 that has the Pandora thumbs up/thumbs down buttons built right in.
Here's the most unexcited guy in the world explaining how it works...
If I wasn't trying to by a house in NY, I'd be all over this. :)