OH! and I almost forgot, Google sketchup has been *invaluable* for teaching the figure in perspective for it's free downloadable figures, they aren't poseable unfortunately, but you can orbit the object to see how it occupies space. The most important thing to do when learning anatomy drawing is practice practice practice...
I'm sure by now you know I don't draw marvel-esque. My art tends to orient itself with eastern media (fancy for Manga, lol).