The loud scream growl or whatever it was that scared the sand people away. What was the point of that. All the slap stick garbage that was added as Luke ans Obi Wan were headed into Mos Eisly. The larger droid hitting the smaller one and the Jawa falling off of the large beast it was riding after it got spooked. There is the blatantly obvious Greedo shooting first.
I didn't mind the addition of Jabba, sure it was cheesey and poorly done but I enjoyed it. The addition of Luke talking to Biggs before they take off towards the death star wasn't so bad either.
I own all three S/E movies on DVD and after watching ESB and ROTJ one time I have been unable to watch them again. they were just to awful. Especially ROTJ.