InstantAction is an online gaming innovator that brings console-quality games to the Web that lets you play full PC games via a Java applet, a bit like OnLive. The company has released "Instant Jam" game that looks like FarmVille and utilizes the same social hooks and interface: there are gifts, wall posts, challenges, your friends at the bottom of the interface. But that's where the similarities end: Instant Jam is an actual game. You can play almost any song in your music library for frak's sake!
More Info: Instant Jam