Just about everyone I know hates how George Lucas tinkered with the original "Star Wars" for the 20th anniversary re-release. Maybe the most loathed scene change is how in the original version, when Greedo confronts Han Solo, Solo shoots first; whereas in the revised version, Greedo shoots first, somehow missing Solo at point blank range (actually, it's even more preposterous, since Solo dodges a laser blast).
I came across this re-imagination that asks, what if Greedo had shot first and blasted Solo away? It turns out that the universe would be quite different . . . .