Shit, now that we're on the topic of nerdgasm I guess I can't drop Maria Brink or Cristina Scabbia, because they're far less nerd and far more "metalgasm".
Mine is more Kari from Mythbusters, she's badass. Ironically not too different looking than Felicia Day. Felicia Day don't know how to make homemade napalm, tho.
Not to get too deep on this topic, though, but my woman -hates- Olivia Munn particularly because when G4 was doing a thing on Star Wars, Olivia had NO idea who Boba Fett was. This made me love my woman EVEN MORE than I do now.
Which leads me to bring up something that I've been keyed into for quite some time. Hot chick nerd rape.
Hot chick nerd rape is when a hot chick who has no idea who Kyle Rayner, the Speedforce, planet Korriban, or Johnny Five is suddenly shows up on TV saying that she loves videogames and gets a shitload of money. Hot chick nerd rape is when you fail to recognize that the booth girl at the comic book convention is really an off-season St. Pauli's girl and NOT a geek simply because she's dressed like Emma Frost. Hot chick nerd rape is when a girl that doesn't know the difference between Dr. Who and Hell's Kitchen shows up in a magazine in a thong name-drops "Metroid" at the suggestion of her agent and then suddenly becomes the topic of millions of nerd praise downloads.
My woman accuses Olivia Munn of Hot Chick Nerd Rape. I myself say that she's suspect, but way too hot that I don't care.