I think Return of the Jedi is almost a good enough movie to conclude the original trilogy. I watch less and less these days, but still get a kick out of the Luke/Vader confrontation and the major space battle going on.
Negatives:
1) Han Solo - is way outta character, and has been said he phoned it in because he didn't want to do more Star Wars
2) Leia - has been turned from a feisty princess into some wussy chamber maid and the whole sister thing is pointless
3) Too many jokes, burping frogs, burping slugs, I could go on
4) Jabba's Palace goes on way too long, I literally skip past these scenes until the Sail Barge action
5) Ewoks - Too many cutesy scenes, baby ewoks, ewoks dying, the stupid scene where Threepio tells them the Star Wars story with sound effects
Positives:
1) Luke/Vader/Emperor confrontation
2) The space battle is awesome imo
3) Speeder chase
4) Ewoks dying
5) Leia in metal bikini
6) Admiral Ackbar and Nein Numb