The remote app that was first made for the original iPhone undergoes an update that makes it compatible with the extra screen area of the iPad, bigger resolution of the iPhone 4, and the all new Apple TV.
The remote app can control either an iTunes library or an Apple TV, including creating playlists on iTunes or entering text on an Apple TV instead of using the on-TV keyboard.
As a added bonus, it has support for Shared Libraries which means you can access all your juicy media on your home network running on iTunes.
It is now available in all iTunes App Stores.