Can you find an NFL Sunday Ticket app on it once it is jailbroken?
I haven't seen this - but there are a bunch of live tv and sports streams available so maybe certain games are available?
So for anyone curious, the Apple TV 1 and 2 (the 3 has sadly not been jailbroken yet) are basically just little Unix servers running a version of Apple's iOS. By themselves they've historically been fairly useless unless you were really into the whole iTunes thing.
For example, you get your shiny new AppleTV and try to play a movie you may have ripped from a DVD/Blu Ray or downloaded from another source - but it's not in iTunes format or it's on a Windows share or something. Or you want to watch a Hulu show you can see on your computer but the Hulu version has it locked out.
By jailbreaking it with a program called SeasonPass (might be other methods as well) you can install a few super-nerd programs, the best of which is XBMC (media center). As the name implies, it was originally the Xbox media player back when people were modding the first Xbox's, now it's a nicely developed universal Media Player. It supports just about every format imaginable, can stream from almost anywhere (windows shares, samba, nfs, NAS, etc.) and has a plugin library that is pretty huge. But it's kinda like the library of Wii games - for every one awesome plugin there are like 25 crap ones.
But there's some cool stuff on there. Icefilms has all kinds of stuff - connected and picked "new releases" and there was a 720p stream of Looper for example. Obviously some of the content is flaky and some of the stream quality cab be mediocre. But there's a lot of promise, and the aTV3 jailbreak should be done soon, so there could be a lot of cool stuff on the way. For the super lazy there's even a pay software package that sets up a similar solution for you called Firecore (who also makes SeasonPass).
Firecore:
http://firecore.com/
XBMCHub:
http://www.xbmchub.com/blog/category/hardware/atv/
Best collection of HowTo's and info I've found:
http://www.appletvhacks.net/
The basic steps are:
1) Jailbreak atv using SeasonPass
2) Run the latest XBMCHub installer to put XBMC and Nito on your ATV
3) Go to the XBMC settings in your ATV and add repositories - this will cause long lists of AddOns to appear in each heading on your ATV and you can pick the ones you want. The easiest way to do this is to use the online "Fusion" http link which has lots of repositories sorted by folders.
For those of you looking to ditch cable/satellite I would think this would be a pretty decent piece of the solution.