Is it just me, or is the chick on the Duke Nukem Pic the same chick who plays patsy on Absolutely Fabulous?
If you want something really sexy (By sexy I mean you think its disturbing, and I think its sexy) google Rule 34 Facehuggers.
Of course, giger deliberatly designed the facehuggers (and their eggs) to be completely sexual. Apparently the facehugger eggs were originally designed to have a slit on the top like a womans vagina, but he was told to change it, so he changed it to quote "That cross catholics love". Thats how we got the eggs we see today in Alien movies. The facehuggers were also deliberate sexual references (Literally being face raped and forcefully impregnated anyone?)
BTW, I like that Tabula Rasa chick. She looks natural, unlike alot of girls who are often considered hot (I for one find Pamela Anderson types to be gross)
P.S. Went to Supanova the other day in perth (Pop Culture/Anime Convention) There were alot of cosplayers. The girl in black latex was especially easy on the eye.