BJJ FAQ thread reminded me of some of these. 1)RUBBER GUARD. When you know what you're doing, alright, fine, but christ. I ref 10 or so tournaments a year, probably 50+ matches at each, and I'm sick of seeing guys who don't know how the fuck to do an armbar working on the rubber guard and, of course, doing it wrong. 2)When at class, instructor teaches a technique and a couple guys do it twice or three times each then sit around and chat. Parrumpinha from ATT handled this the best I've seen, "So how long have you two been seeing each other?" They went back to drilling. 3)BJJ standup or sparring training...the guy that just circles. No jabs, no attacks. Just circles and runs. Ugh.