I imagine they've been posted before but the David Macaulay stuff is pretty good too:
http://www.librarything.com/work/17820
http://www.librarything.com/work/33021
http://www.librarything.com/work/4483
http://www.librarything.com/work/4167
Think he's got some others as well.

If you like sci-fi I think Dorling Kindersley has a line called Incredible Cross-Sections covering most of the Star Wars series. Don't know if they have them for other things but I bet they do.
M