With apologies to mark, I guess we'll have to call this a "filler" thread.

You know how annoying some blokes are using 'fuck' in every fucking part of speech imaginable. (I'm still waiting for 'fuck' as a conjuction, however.) *sniff* Erm, maybe not the best example.

Things that can really fuck-up an otherwise good tune?

Me:
Crashing cymbols on every downbeat. "Take a breath there, buddy!"
Horns. Except for soulful saxes.
Organs. Keyboards OK. Door-esque organs suck. Stone Roses barely got away with it.