In an attempt to get to the bottom (heh heh) of this most important of social issues (Are Adam Savage and Jamie Hyneman, in fact, gay lovers?) I consulted the truthsayer of modern American pop culture and all around unquestioned source of, well...everything: The Internet.
Here is the evidence.
First of all, this very blog category was hit nearly 200 times in about ten days. Most of the hits came from Google and here is a sampling of the search terms used to bring curious minds to this blog: Mythbusters Adam and Jamie gay, Adam Savage and Jamie Hyneman gay, mythbusters adam jamie gay, etc etc.
Next. An incredibly deep Yahoo Answers poll was conducted nearly four months ago. The question was: Is Adam Savage gay? The three responses ranged from a "Who is he?" (I mean, really people, maybe if you don't know the subject of the poll you should just NOT ANSWER) to a comment about his "tite" shirts to one of those nearly-spoiler comments: "he has a wife and kids, but he does live in san francisco." Ok, so that poll sucked. Let's keep looking...
An interview with Adam Savage conducted in August 2005 explored the sexual orientation of Jamie (via Adam.) Adam stated that Jamie has been married to a woman for 20 years. He also acknowledged getting lots of gay fan mail. Here is an exerpt: 
"When the show first started airing, Jamie and I both got a lot of gay fan mail. He got a little upset at first, and his wife pointed out "Jamie, take the compliment! Someone thinks you're really hot! It's okay if it's a man." And he was cool with that, and relaxed about it. [Comment from RU Gay: sounds like the typical lesbian-gay bearded marriage just unfolding its glorious wings.]
At some point in there, he got an email that said "I want to suck that mustache right off your face!" (LAUGHING) [Comment: That was actually from Adam.]
And I also got what I consider a great piece of writing in addition to the most over the top gay fan mail I got where someone said, "I love you on the show. Your personality is so nutty and sweet. (Like peanut brittle.) And hopefully just as hard." (LAUGHING)
Then, there was this fantastic analysis, posted on an Australian website in November 2005:
"After two seasons of watching Mythbusters, Redfern woman Sue Hooper still hasn’t reached a definitive conclusion about the sexual orientation of hosts Adam Savage and Jamie Hyneman. Months of painstaking anecdotal enquiry have left her only “90% sure that Jamie is gay, and Adam is just his good friend. Or at any rate that Jamie is gay, and Adam is mostly straight but has a little crush on him. Or I guess one of them could be bi, although it doesn’t seem quite right for some reason.”
“There’s no question about Jamie,” says Hooper. “Come on - the guy comes from San Francisco, has a Buffalo Bill moustache and wears a beret all the time. He’s got to be gay. But Adam, I’m not sure. He’s just softly spoken, so it’s hard to tell.” 
Initially, Hooper worked with the hypothesis that both hosts were gay, and even postulated that they were in a relationship . “In the episode where they busted the myth about cans exploding in a hot car, they were arguing like a married couple. And at the end, they got into this kind of macho horseplay. That got me thinking that they could be sleeping together.” Hooper then settled on the idea that the wrestling was just Adam’s way of showing he was comfortable with Jamie’s sexuality, although she admits she has no firm evidence for this view. Repeatedly scrutinizing Adam’s glasses to determine whether they were a gay fashion item or just “geek chic” also proved inconclusive.
Hooper’s analysis was shaken further when her flatmate Carl Sanderson, proposed the radical theory that Adam was gay and Jamie was straight. “Carl claimed that I was just going on stereotypes and that he had once heard Jamie mention his wife,” says Hooper. “I can’t believe it. Maybe it was just an ironic comment. Besides, plenty of gay guys are married,” she added. As a mental exercise, Hooper explored the possibilities that both men were simply gay-acting straights, that one of them was having an affair with a member of the research team, that one of them was straight but they had slept together as a drunken mistake, and that one was gay but celibate, before finally arriving back at the belief Jamie was definitely gay.
Hooper secretly hopes that the show will dedicate an episode to busting the myth that both of them are gay."
[Comment from RU Gay: Hey homos! How do we suggest show ideas? Let's do it!]
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