I can't believe you want to wipe Once Upon A Time in Mexico off the earth?! One of Johnny Depp's funniest performances ever! The whole speech when he explains to the Banderas character how he brings balance to the world, before getting him to kill the chef of the best ever pork dish is so damn funny! That movie also invented my favourite cussword - "F*ckmook". Ah well, I guess different strokes move the world.
I also really love Far From Heaven. What a champion comeback for Dennis Quaid, super cinematography....I could go on....
Ah well, at the risk of offending others, I would get rid of The Life Aquatic With Steve Zissou. Not because it is bad, but because I found it a bit disappointing after Royal Tenenbaums and Rushmore. That way, Wes Anderson would still be up in my pantheon of film directors.