Are there any full on steampunk live action movies apart from the craptastic Wild Wild West abortion?
Sky Captain & the World of Tomorrow was great.
Golden Compass movie was decent.
Both have definite steampunk elements, not sure that either would qualify as "pure steampunk", if such a thing even exists. Maybe it does exist but I don't know the genre well enough to properly identify it.
Perdido Street Station by China Mieville is one of the next books I'm gonna read, when I get through with what I'm reading now. I've heard good things.