Google Reader RSS Client
I'm not going to spend a lot of time on this review except to say that I have been waiting for an RSS client THIS GOOD for a very long time. I've been using the out-dated NetNewsWire for years now. Caffeinated is a beautifully developed breath of fresh air for Mac OSX RSS readers. It is a feature packed RSS client for Mac OSX which syncs with your Google Reader account.
If you're looking for a more in-depth review, check out Gadgetero.net's recent review of Caffeinated.
Ease of Use: 10
Look and Feel: 10
Overall Rating: 10