What has been seen - cannot be unseen, now I must re-think my life.
This is the worst cover of Beatles "Let it Be", or may be... the best. :)

Radiohead held an online contest to remix "Nude" from their album - "In Rainbows" This was quite a difficult task for everybody that entered, as Nude is in 6/8 timing, and 63bpm. Most music that's played in clubs is around 120bpm and usually 4/4 timing. It's pretty difficult to seamlessly mix a waltz beat into a DJ set.