Now you can control your DVR cable boxes and set channels to record from the iPad. Really cool app, if you have Comcast. It's in the App store. Search "xfinity".
http://www.engadget.com/2010/11/15/comcast-xfinity-remote-app-for-iphone-ipad-launches-video-stre/
http://www.engadget.com/2010/11/15/comcast-xfinity-remote-app-for-iphone-ipad-launches-video-stre/