I've had a few. I run under the theory that if I had been recording, then it wouldn't have happened. The cool shit always happens when you can't prove it. Like sniper triples and quad feeds on three or four separate targets or single shot mutli-kills (more than two). Start of match quad feeds, supers that take out an entire enemy team, etc. One of the reasons that I'll be making the switch to the Xbone soon.