Thom Yorke stopped by The Jonathan Ross Show and performed Radiohead song "Karma Police" on piano:
This is so great. The performance could have been an A+ if he had continued the song through some of the extended outro familiar from the album OK Computer instead of cutting it short and saying "That's probably enough, right?" as he plays a sloppy half-assed ending to the song.
The interview is quite entertaining as well, as Thom Yorke says Atoms for Peace is "fast and furious" and that playing outside of Radiohead "is like sleeping around, which is not necessarily a bad thing." Thom gettin saucy!
As far as the brevity of the actual song, the youtube video is 3:18, but Yorke's performance starts at 1:40 and ends at 3:11 so the actual song is condensed into an extremely short 1 minute 31 seconds.
There is something to be said about an artist leaving an audience wanting more. There's also something to be said about capturing so much feeling in a song that's less than 2 minutes. Personally, I would have liked to see Yorke open up a little more on this one because it's rare to see such a brilliant performance on television. One possible reason for the abrupt ending is that television shows often have strict time restraints.