How Do You Like Your Heroes?

The adorable Jackie at Bouquet of Books and Dani at Entertaining Interests are hosting this Heroes & Villains blogfest, in which we get to talk about our favorite heroes & villains...
Me, I like the ambiguous type, so I have an affinity for the villains who are also heroes...and the heroes who are also villains. Today, I have only one name for you: Severus Snape. Of Harry Potter fame for those who don't know (is it possible there's anyone out there who doesn't know?). Throughout the series we learn that he is a man capable of both intense cruelty and profound, unselfish courage.
What I love most about Snape is that he kept us guessing throughout the entire series. Even by the end, the answer isn't entirely clear as to whether or not he was good or bad. ***SPOILER (sort of) ALERT*** He certainly did good, even heroic, acts, but that doesn't erase the fact that he was a total arse to Harry and the other students for all those years, no matter what the backstory was on his motivation.
My fascination with Snape is actually what led me to write my first novel-length fiction, a  Harry Potter fanfiction titled Professor Burbage and the Potions Master. He was very fun to write, precisely because of that duality in his character, especially when the intelligent and talented hero/villain was paired with an entirely sweet, fluffy-headed innocent. 
There are many great Snape quotes, but my favorites are his condescending remarks to the students. I said he was an arse, but that doesn't mean he didn't crack me up.

“I can teach you how to bottle fame, brew glory, even stopper death — if you aren't as big a bunch of dunderheads as I usually have to teach.”
-Severus Snape in Harry Potter and the Sorcerer's Stone (J.K. Rowling)

“That is the second time you have spoken out of turn, Miss Granger,” said Snape cooly. “Five more points from Gryffindor for being an insufferable know-it-all.”
-Severus Snape in Harry Potter and the Prisoner of Azkaban (J.K. Rowling)

Alan Rickman did a marvelous job portraying the sinister wizard in the movies, but considering Snape was supposed to be the same age as Harry's parents, he was a little elderly for the role. If my fanfic were being made into a movie, this is who I'd pick to play him:

Jack Davenport (as the ex-Commodore Norrington in Dead Man's Chest)
So who is your favorite Hero who's also a villain?