Just the one character? That’s a bit limiting, considering the amount of geek TV I watch; I can, however, put together a shortlist…
From Doctor Who, not Voyager. It’s the genius eccentric thing, I think, a character who’s always the smartest person in the room but acts like a complete lunatic. A lot of sci-fi heroes are a bit po-faced and serious and worthy – The Doctor failed his exams and flies a time machine that doesn’t work properly, and that’s kinda loveable. Do I collect memorabilia? Only a mountain of books and monthly expenditure reserved for Doctor Who Magazine…
Willow, Xander, Andrew and Giles (Buffy the Vampire Slayer)
I like any group who can have nerdy/geeky conversations about obscure topics, and who can make comic book references roughly three times every 45 minutes. Geek pride, dude.
Dr. Rodney McKay (Stargate: Atlantis)
Because no-one does stressed out ranting like David Hewlett. As a stressed-out ranter myself, I can relate.
Benton Fraser (Due South)
Because being polite is cool.
Because being able to defuse a bomb with a paperclip is even cooler.
There are probably more (Ironhide from Transformers, the Question from Justice League Unlimited), but I’ve been away for a couple of days, so to be honest my brain’s barely coping with typing…