Simmer (formerly Foodie) - Yelp, but for every dish on the menu
AudioBus - With Audiobus, the revolutionary new inter-app audio routing system, you can connect your...
Spoon University - Food network for next generation.
TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.
NYT Cooking - iPhone app with 17,000 free recipes from The New York Times
Go Button - Go Button is a mobile audio app designed to provide professional playback of music and sound effects for live shows. It provides a creative, self-contained show control system that runs on your iPad, iPhone, or iPod touch.