4. Newhart, 'The Last Newhart' (1990)
In one of the most surprising endings in television history, Bob Newhart pulled the wool over everyone's eyes when it was revealed that his hit 1980s CBS sitcom, Newhart, was all just a dream. Spanning eight seasons from 1982 to 1990, the show's namesake brought laughs as New York transplant-turned-inn keeper Dick Loudon who, alongside wife Joanna (Mary Frann), juggled a cast of eccentric characters in a quirky Vermont town. (Who could forget the bumbling trio of brothers who always announced their presence with the same introduction, "Hi, I'm Larry. This is my brother Darryl. And this is my other brother Darryl"?) But Newhart had the last laugh when the final scene reprised his role as Dr. Bob Hartley from his previous hit sitcom, the 1970s Bob Newhart Show. In bed next to his former leading lady, Suzanne Pleshette, he dropped the (hilarious) bombshell that the last eight years were all just a side effect of eating sushi before going to bed.