Not me but my dad. He filmed a Nirvana gig, and Kurt Cobain spat on dad's camera lens and gave the camera finger. My dad was annoyed as he didn't really care for their music and owned the camera, but he was pleasantly surprised when Kurt came back over when the Kurt was no longer being filmed, he apologised to my dad, used some tissue to help wipe down the lens and explained how it was part of his act.