love that you can actually see the transition in Loki's character<--He goes from young and innocent little brother to experienced and hardened villain to conflicted antihero who does his best to hide his emotions but is flirting with the idea of being good and feeling again.
I love Tom's dedication to his craft. He has played Loki in 3 movies, and each time he has brought a new and different dimension to Loki's persona. I can't imagine many other actors putting that much effort into such a popular character. Tom seems to always be testing his (and his character's) limits. I love and admire him greatly for that.