Good ones, bad ones, quick ones, long ones, static ones, moving ones, or ones that are inventive. If you have a loading screen you find interesting, post em. Personally, I like the ones in the first Tony Hawk's Pro Skater game. The loading times are kinda ass even by PS1 standards but they have a great & memorable look to them (especially the wireframe preview of the level), are unique to each level, and shows you a few tasks to look at to pass the time.