Most definitely agree on the Han/Lucas thing even though GL has always publicly stated that Luke is the character most based on himself.
R2 made another mistake in one of the films when he put his jack into an electrical socket, admittedly it was at C-3PO's behest.
Actually he made a mistake when he tried to navigate the swamp on Dagobah and got swallowed and spat out by the big swamp-creature. Does anyone know why R2 didn't just use his jets that he now apparently has?
Come to think of it on Endor R2 uses his saw to free them from the Ewok-made Wookie-trap and the group all fall to the ground, again including R2 who could have just flown to the ground.
Silly little droid forgot that one day the Master would make it so that he always had booster jets in his legs.
Also doesn't R2 keep bumping into walls throughout the OT films?