I am partial to the Nightmare on Elm Street Box Set with all the movies in separate packages (to hell with slim cases) and a weird ass special feature disk with some kind of maze of menus unlocking about a million little special feature clips. It was a pain in the ass but also rewarding.
Evil Dead 3 Disk
Ultimate Dawn of the Dead
Also I got a five disk set of Halloween 6 on bootleg including a special features disk (with a denise richards test for one of the roles), the tv cut, producers cut, and a bunch of other stuff.
It wasn't the most expensive DVD i ever bought, but it set the benchmark (for me) of how a film should be released
and by the way, this was a horrible post to read because now I have about 40 movies I have to go out and get now. Thanks for all the ideas