I think, for me, Epcot is the most Adult park. Much education/cultural exploration in the World Showcase and thinks to explore with a few thrill rides in the future world section up front.
If you're a movie buff, then MGM would best interest you. The animation studio, the Great Movie ride, the stunt shows etc, with a few thrill rides thrown in.
If you're a traditionlist and want the full on Disney experience then MK is the way to go. From Mainstreet to each land, traditional Disney rings true. As well a few new attractions. Mickey's Philharmagic was very good.