The Awl has a great post Maps We Wandered Into as Kids that explores fantasy maps that inspired readers growing up. I had many, but one that totally blew my brain was the one from Time Bandits.
Part cosmic blueprint, part wormhole transit schedule--it's got to be one of the coolest movie props of all time. If only it were real. Oh wait, it IS real! Or rather you can get your own reproduction.
What about you? Have any favorite cartographs from books, comics, movies, or just plain geography (Google?) that have inspired you?
Via Boing Boing, which has links to another great map post you should check out.
Also: ever try googling directions to Mordor? ;)