The Chinese and Japanese Disney websites are my favorite sources for wallpapers - they have a huge selection, and most of them are never posted on the American site. This is the holiday section of the Chinese site, and this is the whole Japanese download section.
I also have a pretty cool MK screensaver with tons of pics from the park... Even plays music if you want it to. I'd be happy to e-mail the zipped file to anyone that would like it... Just PM me your e-mail addy. :wave: