I haven't yet tried Infinite Walls (free), but it seems like a great idea. The app lets you search Google Images for photos of subjects that interest you. The app automatically resizes the files for use as wallpapers on your iPhone, iPad, or iPod touch, automatically detecting which device you're using. In-app purchases let you add more features, such as a vault where you can store images and have access to them without an Internet connection.
I saw a press release today for an app called "ZombieBooth." This was a little weird because I had downloaded the app earlier on my non iOS tablet, as that had a camera on it. There is an iOS version also which works on your iPad2, Ipod Touch 4 or your iPhone which have cameras on it.
Basically, you can see what people would be like if they were zombies. These are not just pictures. There is animation involved. It really is pretty freaky, but it's fun.
The press release is below. You can see what the app is all about. The link below is to the free Lite Version. There are paid versions also.
Just launched yesterday, the free video app Plizy
, bills itself as a combination of Flipboard and Pandora. It offers channels of video and uses an intelligence engine to generate videos based on your interests.