I've always felt that RotJ had the best PARTS of all the movies - the scenes between the Emperor, Vader and Luke. The scene where Luke charges out of hiding, attacks Vader and backs him across the room is the apex of the entire series. I remember sitting in the theater gape-jawed the first time I saw it.
Unfortunately, it was all mixed up with the killer teddy bear horseshit.
And for all the punks who think the special effects in the original Star Wars suck, you have no idea how groundbreaking they were at the time. You're all spoiled by CGI and take it all for granted, but that movie changed everything. The thrill of watching the opening scene in dark theater as a little kid lost in wide-eyed wonder is something you'll never experience, and it's your loss.