Captain Jack Harkness!
For the brilliance of Ianto, his loyalty to Jack and the fact he shot Owen
And also the heartbreaking-ness of Jack/Jack!
They Keep Killing Suzie
For the brilliance of the episode! And of course THE STOPWATCH SCENE!
Also likes Countrycide, for something different, the save-the-day-ness of Jack, and the fact Ianto got more screen time!