EW.com posted “17 Heavenly Bodies of Sci-Fi”.
http://www.ew.com/ew/gallery/0,,20036782_20037401_20173148,00.html
Some obvious choices and some surprises. Don’t want to spoil. Have fun!
FHM has their own list - “Top Ten Sci-Fi Hotties”. This link includes clips! (may not be SFW)