As a sci-fi geek myself i find 90% of the genre stinks. As for Star Wars IMPO Empire Strikes Back was the only real good one. It was dark, the characters suffered which you felt for, well paced and just worked. Of course it helps when you have a good screenplay, director and actor improvisation involved. What ruined ROTJ was those frakin' Ewoks, thanks Lucas. As for the pre-equals, they were utter crap.