Last night I put up a collection of mild-NSFW iPhone/iTouch wallpapers (no nudity) on a page so those who would want to check it out could - http://www.nsfwiphone.com/
Probably going to be in a minority here, but not my taste at all: I much prefer women who have a "natural" beauty - if I wanted a photograph of silicon I could take one of the inside of my Mac Pro