The new Apple TV has been hacked to support Bluetooth keyboards and the Wiimote.
TUAW points to the video below by developer hacker Tom Cool from the #awkwardtv channel on irc.moofspeak.net. Cool cross-compiled support for the WiiMote from the iPhone
Matthias Ringwald recently collaborated with iPhone developer "Optimo" and Jay "saurik" Freeman to bring his Bluetooth stack software BTstack from the iPhone to the new Apple TV.