I was watching a RAW from 1993 where the Steiners absolutely stiffed the SHIT out of their two jobber opponents. I know, I know, big surprise.
Scott Steiner IMMEDIATELY grabs a full nelson and hits the SICKEST DRAGON SUPLEX _EVER_ to start off the match, and then follows with a few belly to belly suplexes and a double underhook powerbomb. Rick then comes in and clotheslines the SHIT out of the poor guy a few times before kneeing him, punching him, and finishing the beating with a double team bulldog for the pin.
Then, there's the SICK beating in the Low Ki/Hit Squad vs. Special K match from Ring of Honor's Expect the Unexpected, which was pretty close to crossing the line...it was just SICK.
Any others you can think of?