Although I firmly belong to the group of fans who like their Loki dark and twisted (as opposed to 'misunderstood') I found this piece on him interesting.
(If you haven't seen The Avengers yet I doubt you're interested in seeing it at all. And then why would you watch the Bloopers? And then why would you be worried in being spoiled? Buuuuuut ... anyway here it is: SPOILERS AHEAD!)
Apologies for the Tom Hiddleston spam-I simply cannot resist ;)
This interview isn't unusual-the same questions about Loki we've already heard a hundred times, but Tom Hiddleston does explain a bit more about Loki's arc in Thor The Dark World.