For me it was kind of a bigger surprise to me that Vader was confirmed to be Luke's father in ROTJ. That, combined with the Unlce Fester face behind the mask kind of made Jedi a downer for me. I enjoyed the movie, but remember feeling really disappointed in the end. Honestly, I didn't want to know who Vader really was. I didn't want to see the face beneath the mask. He was totally de-mystified for me...no longer the badass that the Vader we all know and love, truly is.