Torchwood is not gay series, but main caracter is bisexual. As I like Science Fiction it’s enough for me :-)
Torchwood (2006–2011)
Torchwood is a science fiction drama television programme, created by Russell T Davies and starring John Barrowman and Eve Myles. It deals with the machinations and activities of the Cardiff branch of the fictional Torchwood Institute, who deal mainly with incidents involving extraterrestrials. Torchwood is not a gay themed television programme but explores several themes in its narrative, in particular LGBT themes. Various characters are portrayed as sexually fluid; through those characters, the series examines homosexual and bisexual relationships. Although the nature of their sexual flexibility is not explicitly discussed, the characters offer varying perspectives on orientation.
I hated the first season of Torchwood, because it lied. It promised to be a dark sci-fi series for adults. All it was was a show that pretended to be adult, with kisses and swears, but felt like a sillier show than Doctor Who, which is a great show, but Torchwood is supposed to be darker.
But then the second season started. The quality of drama and script and even acting skyrocketed. I suggest seeing it. At least, now I do. And the kisses and swears suddenly feel like they belong. I had some issues with the effects of the episode Meat, but the script for it was about perfect.