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10. Deb catches Dexter - Dexter

9. Lois and Clark's first wedding - Lois & Clark: The New Adventures of Superman

8. Connor and Cordy - Angel

7. Season 2 and beyond - Heroes

6. Eric leaving - That '70s Show

5. Sherlock's over/under-explained return - Sherlock

4. Cliffhanger bait - The Walking Dead

3. The mother dies - How I Met Your Mother

2. Literal cork - Lost

1. King Bran - Game of Thrones

Honorable mentions:

Charlie's death - Two and a Half Men

The Carver reveal - Nip/Tuck

William's parentage - The X-Files

Bauer's family are terrorists - 24

His name isn't Michael Vaughn - Alias

Two and A Half Men became watchable after Charlie Sheen left.

Two and a Half Men should’ve ended after Charlie Sheen left.