Even though Dimitrenko sucks as a fighter, his body punch KO of a very game Luan Krasniqi was pretty damn good. To land such a perfect liver shot on a fighter four inches smaller is impressive.
Gerry Penalosa on Jhonny Gonzalez was a good one, and Gonzalez had been winning the fight up to when it happened.
I saw Gerald McClellan Knock some one out with a body shot on HBO when I was younger. Can't remember the other fighter. I remember G-Man hit the guy with a left to the body. dropped him hard, they showed an overhead view of the guy on his side in a lot of pain moving in a circle.
Didn't Margarito KO Cintron in their second fight with a body shot, I remember he knocked him down with a great body shot I can't remember if it KO'd him though.
This one is easy. Micky Ward vs. Alfonso Sanchez. Ward lost every second of this fight until the 7th round KO. It was so one sided with Ward getting his ass boxed off that Lampley and Merchant were yelling at ringside to stop the fight by the 5th round. Micky dropped Sanchez with the only meaningful punch he landed the whole fight. Typical Ward left hand liver shot.
Cause it's not nearly as impressive as other ones mentioned here. Unless you take into account quality of opponent.