Nice collection... Personally I don't get a movie unless I know I'll watch it enough to make up for the money in buying the DVD. Hence Kentucky Fried Movie isn't on my list!
You don't like Stanley Kubrik? 2001? A Clockwork Orange? Full Metal Jacket? The Shining?
Fantasia 2000 is good if you like classical music (pines of rome, pomp and circumstance, firebird suite...)
Excalibur is good if you like King Arthur.
How can you not have Conan???
Do you like anime? There are tons of anime titles on DVD now (as opposed to a few years ago where you couldn't find squat!)
Basically that's all I have that you don't have. you've got a million I don't, but like I said, if I know I won't watch it more than 3 or 4 times, I won't buy it. (caveat is the X-Files season collections... I might watch them through totally just once, but that's 25 episodes for about $5 a pop, not a bad deal IMO. They're on my wish list at Amazon.)