ruttens liver kick to randleman which turned the fight around is one that springs to mind. hatton vs castillo oops wrong forum.
#5 & #1 back kick. Hell yeah. Ive been hit by one of those and had my whole day messed up. Kept sparring and I couldn't do anything right. Its like being broken. #3 was nice too. The velocity of the instep of your foot is the fastest part of the 'whip'/ Solid shot to the ribs/gut and you can say goodbye to all the air in your lungs.
Dennis Siver's spinning back kick at 105 was great, the guy has done it before as well. Can't wait to see him fight Pearson.