I've mentioned this before, but at Sonar 2003 we danced to a DJ set by a 'LCD Soundsystem'.
When we got back to the UK we saw LCD Soundsystem were playing down the road from us, so we went along and dropped pills ready to relive our Barcelona experience in a local club. Only we found it was a gig, with a band playing, to about 20 muso blokes sipping pints checking out this new act. I've never stood out more obviously, running around with a big smile on my face and dancing like a raver. Great night.