I just received my copy of this at the end of last week and I've been enjoying the hell out of it. There's a very in-depth documentary. 5 different versions of the film (some with commentaries-3 on the new "Final Cut" version alone). I guess I could do without the cheesy suitcase (where the hell am I gonna put it?) but the content is awesome. I would heartily recommend this to any "Blade Runner" fanatic.
Buy "Blade Runner" (Five-Disc Ultimate Collector's Edition)
Buy "Blade Runner" The Final Cut (Two-Disc Special Edition)