It's hard to believe that the classic sitcom "Full House" aired its final new episode 20 years ago this week. The TGIF hit is still a constant topic of pop culture discussion -- they're even rebooting it after all these years. If you recall, the show ended on an odd note when things were taken to a strange, soapy place by having Michelle lose her memory in a horseback riding accident in an awkward two-part finale. But that's not the only TV show ending that made things weird for everyone watching. Check out 10 series finales that left us going: "what was that?!"