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See which science-fiction sexpots TVGuidecom readers love

Shaun Harrison
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1 of 15 courtesy David Duchovny

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15) David Duchovny (The X-Files)"What happened to the shows that set the bar for Sci-Fi like The X-Files [Can't forget] David Duchovny." (Bauer22)
2 of 15 Miranda Penn Turin/Fox

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14) Eliza Dushku (Buffy, Angel, Tru Calling, Dollhouse)"She's gorgeous and can kick ass. Sounds good to me." (Christine)
3 of 15 Diyah Pera/Fox

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13) Gillian Anderson (The X-Files)Always rocking the collared shirts, Scully was the thinking man's sex symbol. Smart is sexy, too!
4 of 15 Justin Stephens/Sci Fi Channel

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12) Katee Sackhoff (Battlestar Galactica)"Katee Sackhoff from BSG. I can't count how many times I've watched "Unfinished Business" from Season 3." (Josephine517)
5 of 15 Mike Ruiz/Sci Fi Channel

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11) Ben Browder (Farscape, Stargate: SG-1)"No doubt about it, Ben Browder on Farscape! Oh, my goodness, he takes my breath away just standing there...." (lvibber)
6 of 15 Fox/Sci Fi Channel

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10) Nathan Fillion (Firefly)"Nathan Fillion. Yup, yup. Come on, now, I made a darn login to TVGuide.com to nominate this man. Must mean something!"(tammyscaglione)
7 of 15 Adrian Rogers/BBC Worldwide

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9) John Barrowman (Torchwood, Doctor Who)"This man does not get enough attention in the States. He's gorgeous and possibly one of the funniest actors I've ever seen. He's so charismatic, not to mention he can kiss anyone and make it hot!" (x5649)
8 of 15 F. Scott Schafer/Sci Fi Channel

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8) Joe Flanigan (Stargate: Atlantis)"His character is sexy, smart, funny and deadly. Plus, he's got the wildest hair in any galaxy!" (dignan50yp)
9 of 15 Sci Fi Channel/BBC

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7) David Tennant (Doctor Who)"It's the mussy hair, the expressive eyes, the adorable dimples when he smiles and the accent. Or maybe it's the talent. Whatever it is, he's got it." (kieferbabe)
10 of 15 Justin Stephens/Sci Fi Channel

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6) Jamie Bamber (Battlestar Galactica)"The entire cast looks like underwear models with extra sprinkles on top, but special mention has to go Jamie Bamber, who I remember when he was just a wee recruit on Hornblower. Gotta love the Brits." (topaz_bean)
11 of 15 Warner Bros. Television

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5) Alex O'Loughlin (Moonlight)"He has the longest lashes, gorgeous hair and best facial expressions I've seen. That smile can light a thousand light bulbs. He's a true heartthrob but is so humble about it. That's the sign of a real star." (SonjaMMK)
12 of 15 Lorenzo Agius/The CW

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4) Allison Mack (Smallville)"There's something underneath her adorable looks - a sort of simmering confidence. There's nothing forced or plastic about her sex appeal. It's genuine and irresistible." (Firebunny)
13 of 15 Michael Courtney/The CW

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3) Tom Welling (Smallville)"The most beautiful man in Hollywood is perfect: the tall and muscular body, the chiseled cheek bones, the pouty lips, those clear green eyes and devastating blinding smile. He's the whole package!" (bluemoon2)
14 of 15 Michael Muller/The CW

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2) Jared Padalecki (Supernatural)"Jared Padalecki is smokin' hot! He's tall and has an incredible smile and dimples, not to mention his beautiful hair. He's the total package - gorgeous looks, smokin body and an awesome sense of humor." (jennyluvsjared)
15 of 15 Michael Muller/The CW

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1) Jensen Ackles (Supernatural)"By far the sexiest man on the planet. His lips are the most perfect lips I've seen, and then there's that body - long, lean and perfectly muscled. He's not the sexiest sci-fi star, he's the sexiest man alive." (lacy215)