Gale, Breaking Bad
Fine, fine. We knew through most of the Season 3 finale that Walt and Jesse planned to kill Gale to maintain some leverage with Gus. But the plan was for Walt to pull the trigger, something he became more and more comfortable doing in Season 3. Instead Walt is detained, and Jesse is forced to step up. Say what you will, but it was a shock when, through teary eyes, Jesse finally takes a life to save his own.