Season 5, episode 5
Writer: J.H. Wyman
Director: PJ Pesce
Fringe worked one of its best themes the dehumanization we risk by seeking to become superhuman to assuage pain and achieve justice to shocking effect when Peter, raging from Dead Etta grief, butchered an Observer to jack his quantum computer/teleportation power plug and become an omniscient yet dangerously distant transhuman himself.
Image Credit: Fox
It was the best of timelines, it was the worst of timelines; before the cult fave's final bow, we count down its most fascinating, trippy, and game-changing installments