Tom Hiddleston ~ World's Sweetest Man. I'll throw Mark Ruffalo's name into the ring as well - apparently he's such a sweetheart to people in reality too. Also, fun fact: Tom Hiddleston is wearing his Loki scarf from Thor 1 that Marvel mailed to him.
"Having a bad day? Here’s a hug from Tom Hiddleston." // (gif) Oh my goodness, that actually did feel like a hug! :-o Good day, bad day, I don't care - I need this every day! *huggles* for Hayley! U don't know how badly I want to hug this man