Back to the Future. It all ties together so well. The original Star Wars is a close second. Then there's a slew of trilogies with one movie that stands out as significantly worse than the others (Alien/Aliens/Alien 3, Terminator/T2/T3, etc.).
Most overrated movie trilogy of all time?
(the correct answer is Lord of the Rings!)
EDIT: Ah fuck, I'm a minute too late.
I use Old Spice anti-perspirant.
Question is still what is the most overrated movie trilogy of all time.