*raises hand* RnRC. God help me, never again. Although I did manage to loop that ride five times in the single rider line before they managed to segue over from ToT. The only good thing is the initial take-off of the coaster shut 'em all up REAL quick.
I agree that it's the chanting that bugs the most...especially since you can't hear anything over it. It's bad when you can't talk to other members of your own party, but it especially bugs me when they do it during rides - I've been in the ToT video room and the HM stretching room with tour groups and some of them don't even shut up then. I go at least once a year, but for people for whom this is their only trip to Disney? Don't ruin it by chanting over all the ride narration.