Watching it on order (1-2-3-4-5-6) would be interesting. Bobba Fett's appearence would be kinda shocking, and quite a surprise. "I am you father" would still be a powerful line, because of the emotional impact on Luke ("oh now he knows it"), Leia kissing Luke would make people laugh, the new celebration scene at the end of ROTJ would make a little more sense.

Ok, so, when they release the Ultimate Trilogy, I'll knock my head on the wall until I forget all about SW, and I'll watch from 1 to 6. Then I'll tell you guys what I think. Altough I'd forgot about this website... maybe I can tatoo it on my chest "remember originaltrilogy.com".