For starters, there is SpaceProg. He's a pretty cool guy, even though I'm not a big fan of Doctor Who (though I'm not entirely hostile towards the show like the circles of Tumblr I usually hang around with) and especially not NASCAR Racing (sorry Prog, but ugh!).
And there is also Askold, who is also a cool guy. Bonus points for being one of the few Finnish members of the site (don't ask me why, I think they're cool people. Most of them, because as of lately, the country is sliding into darkness).