Sports Trading Exchange - Unlike most Bitcoin gambling websites, Sports Trading Exchange was a pre-existing gambling site that decided to start accepting Bitcoin. As a result, it's a fully developed site with lots of action.
Bean BitMarket - A guy in Greece selling 2kg bags of Greek beans to anyone in Europe. I featured this site in my article, "Geeks and Greeks."
Bitcoin Community Ads - A new advertising service for Bitcoin websites. Looks like Operation Fabulous will finally have some competition. Launching in December 2011.