Some of the gems I picked up: for games - Beat Hazard Ultra, Jenga, Nuts, Reflekt, and QuadPong (from our own member Rudy). As for apps: PhotoSender (batch Facebook photo uploading app), FiLMiC Pro (camcorder app, lots of tweakable options!), and SmartSync (syncs Facebook photos and profile information with your contact list).
Looks nice, never head of it. Will try out. Thanks!