@Zelyre: Yea, but there's ALWAYS a new break-your-current-army-and-make-it-obsolete edition around the corner. I can never find anyone to play with, but modeling and painting is fun as shit.
Anyway, Arkham Horror is fun, but teaching people to play is a bitch. Elder Sign is kind of like Arkham Horror Lite and is really fun. Space Hulk is fun but expensive and maintaining it can be a pain. Zombies (and the expansions) is a bit on the simplistic side but can be fun with enough alcohol. If you want to play DnD I suggest tracking down the 3.5 books cuz 4th edition is for babies. Munchkins is actually pretty fun but only for people well versed in games and gaming culture (heh heh).
DONT buy StarCraft: The Board Game.