You know what I quite like? Tracks where the band make a mistake but then are like "hell, the tape is still rolling and we can't afford anymore studio time!!!" so they start the track again and stuff often with some funny dialogue in between. Hell it makes them more human in my eyes or something.

Here is an example:

http://www.last.fm/music/Homostupids

Check out the track 'Mister Payback' innit.

Any more examples then? I can remember one or two Coachwhips ones and one by The Hospitals, perhaps it's strictly the domain of scuzzy Garage Punk?

Who wants all their music all beautifully refined anyway eh? I like the mistakes.