I am T-Pain is a natural to bring to the non-app world via a microphone. In fact, it's probably preferable as you may not want kids playing with your expensive iPhone, and the speaker might even be better on a dedicated device. Plus it seems natural singing into a mike versus your phone!
Angry Birds has spawned plush dolls, iPhone cases and soon, a home version! Mattel will be releasing a toy game where you use a slingshot to shoot the familiar birds into structures you build. This might be fun, especially for the serious Angry Birds fans, myself included, but part of the appeal is the ongoing gameplay. I don't think I'd want to keep setting up the structures between rounds. That's why you don't see snowboarding video games that include the chairlift part. It's all about action. But when I showed these pictures to my kids, they were all over it so maybe the real world is ready for Angry Birds, the home version!