I remember when they promoted this on RAW by having Scooby Doo pin some low-card heel. I repeat: A GUY IN A SCOOBY DOO COSTUME WAS ON RAW AND ACTUALLY SCORED A PIN. Or helped some low-card face to win, something like that.
Oh I actually found the video and it was much less idiotic than I remembered it: a guy in a Scooby Doo costume was at ringside during a match between Sin Cara and Sandow, but did not interfere. He just stood there as the uninterested crowd chanted "CM PUNK! CM PUNK!"