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.
"Loki by Loki" by Tom Hiddleston :D . If Happy Hiddles doesn't make you happy, then you are beyond the help of mortal men >>> I just want to protect this man and huggle him and keep him safe from corruption. In the least creepy way, of course.