You can already jailbreak your iPhone and iPad, and that's common knowledge. But now, you can also jailbreak your Apple TV too. The first untethered jailbreak for the new Apple TV software (5.0.1) is thanks to Seas0nPass.

According to Seas0nPass, you can add these plugins to your Apple TV:

Couch Surfer
Last.fm
Maintenance
Media Player
NitoTV
Plex
RSS Feeds
Rowmote
Weather
XBMC

Sounds nice, jailbreaking is free so have at it here. [Firecore via Cult of Mac]