I saw someone mention including a p2p app in the dashboard and I got to thinking, it would be really cool, and not too hard to implement bittorrent as the source is free (
http://ei.kefro.st/projects/btclient/)
You could have a page where you select files you would like to seed from you box, or select from seeds available on the network (of course this will require a page hosted somewhere to carry all the torrent links, but it wouldn't actually carry any files so it should be really easy).
This could be an easy way to release new apps and bios's etc. Just fire up your box, check the page for new torrents, and download if you see it, then if your a nice guy, seed the file (or just leave the downloader active after completion).
no games of course, but for legitimate releases etc. this could be invalueble.