Coming to XBLA today (23/02) Fret Nice.
This title is a platformer with a difference, you use the Guitar Controller to move the character and play some wicked riffs. So dust of those Les Pauls because now that have a new use.
1200 microsoft points / $15
PS3 owners can get a copy for $14.99 now.
You can also use the standard controller if you want to