5. The Sopranos, 'Made in America' (2007)
It was the gasp heard 'round the world: Otherwise known as, that moment when millions of TV viewers thought their cable went out during the most crucial scene of the popular HBO show's finale. Following an intense mob war that left most of his cohorts dead, mobster Tony Soprano and his family meet at a diner for dinner. In a drawn-out scene, he surveys the eatery, looking up expectedly (or is it nervously?) each time the front door opens and a sketchy-looking patron enters. One by one, though, his family arrives. First his wife (Edie Falco), then his son (Robert Iler). Then, we watch as his daughter (Jamie-Lynn Sigler) struggles to parallel park outside. Back and forth she goes, unable to make the car fit. Inside, Tony continues to look around. Until finally, the door opens and … the screen goes black. Was it his daughter? Was it a hitman coming to take out Tony? In the words of the rock band Journey: Don't stop believin' … or debating how the show ended.