I saw Nightmare Before Christmas in 3-D too, and it was great fun. I still have the glasses as a souvenier, and they were very confortable, fitting easily over my glasses, and easy on the eyes. This new kind of 3-d rocks. It doesn't give headaches or eye aches, and none of it is blurry. It feels like watching a stage show. It simply immerses you in the experiance, and I think Star Wars in 3-d would be cool. Releasing Star Wars again in theaters normal would be awesome, but it would be even more worth it in 3-d, because it would be something totally new.
And in response to Casualimp, they have released 3-d movies on DVD. Spy Kids 3 was on DVD in 3-D, albiet a red and blue scheme, which must be 50 year old technology by now. They might not be able to do polarized on DVD, but they can do 3-D.