Memento Special Edition with the easter egg to watch it chronologically (check out
http://www.eeggs.com for more easter eggs for just about every movie)....
Some things work better all muxed ip, some other things shine chronologically. Still one damn fine move. I can't say what would have made it perfect, and I can't bring myself to call anything perfect, so 9/10 will have to do for this version.
On a related note, my girlfriend used to run a theater. They got Memento in for a one week run. Three months later, they finally stopped showing it.