Man, I do actually like the special edition (I may never have played MI1 again otherwise) but some of the artistic oversights are borderline crazy. One I noticed yesterday is that when you're in the "Man it's hot here!" or whatever scene on Monkey Island, the vultures disappear behind rocks that aren't there.
Basically they moved where the background ridges are, but didn't move the clipping paths that the vultures go 'behind'. So you have these vultures weirdly appearing and disappearing in mid-air.
Amusing as they probably went to some trouble to get that realistic effect in the original.