It's those incredibly hot, butt kicking women that spice up the screen! Duh. 
I mean, take Amanda Tapping in SG-1, where she stars as the incredibly brainy blonde Lt. Col. Samantha Carter, and when she spoke those pseudo-scientifical technobabble on the show, she makes us believe it. Wholeheartedly. Wormholes exist? If you say so, ma'am.
Women will most definitely agree that they watch a series, and watch the men too.
And of course, if the storyline's great, and the VFX awesome, its an added bonus!
Some of my favourites, in no particular order --
Amanda Tapping - All Time favourite ... from Stargate SG-1.
Claudia Black - Farscape
Gillian Anderson - X-Files. I hear there's a new movie.
Tricia Helfer - Battlestar Galactica
Sigourney Weaver - Alien - where the role of female action hero was born.
Jewel Staite - Firefly & Stargate Atlantis
Morena Baccarin - Firefly & SG-1
Milla Jovovich - The Fifth Element
Carrie Fisher - No one forgets her golden bikini in Star Wars III
Carrie Ann Moss - Matrix
Monica Belluci - If Trinity's on here, its only fair Persephone gets a mention.

Katherine Heigl - I didn't know this girl from Roswell would go on to star in Grey's Anatomy, but I'm glad she did. Makes the show bearable.
I'm sure there are more ... way more ... but these are the ones that jump to mind.

Oh, yeah, my wife doesn't mind. Absolutely. I have zero chance with any of these women. She fancies Michael Shanks (on SG-1) herself.


RJ - Self Proclaimed SciFi Geek.
