Star Wars POTF - Ponda Baba

Ponda Baba lost more than just an argument when he came across Luke and Obi-Wan at the Mos Eisley cantina.

A brutal thug and pirate, Ponda teamed up with the psychotic surgeon Doctor Evazan (who threatens Luke in the Cantina) and smuggled spice for Jabba.  After Ponda's arm was severed by Obi-Wan's lightsabre, Evazan tried to re-attach it, but botched the operation leading to a long-running dispute between the two. 

One of the best known bloopers in A New Hope concerns Ponda's arm.  While still attached to his body it is webbed fin-like hands, but when seen on the Cantina floor, the hands are strangely hairy and claw-like!