Unresolved Cliffhangers

Some television shows go off the air before resolving all their plotlines.  A few examples this season include The Event and the reboot of V.  They arguably deserved to be cancelled, but it still would have been nice if the writers had managed to wrap things up in satisfying fashion.  Some shows end their series run on cliffhangers because they mistakenly assume that they will return for another season, while others just intentionally end ambiguously, deciding to leave the conclusion up to the audience's imagination.  Some, like Dallas, The Incredible Hulk, ALF, and Alien Nation had resolutions in later television movies, but many series do not get that luxury.

Here are some of the shows that ended abruptly, leaving viewers wanting more.

Carnivale - HBO's surreal but critically acclaimed series ended with unanswered questions, piling up on all the other questions the show raised.

FlashForward - Since it was based on a book, you would think they could have ended it like the book did, but now, they ended it on a major cliffhanger that will never be concluded.

The 4400 - My wife and I really enjoyed this science fiction show.  Now we'll never know what happens next.

Heroes - The series started out so great and ended so weakly. 

Lois and Clark: The New Adventures of Superman - A super baby?  Really?

Lost - While many people were debating the merits or flaws of the answers they provided, I was more frustrated by the answers they didn't give.

Mork and Mindy - Did the characters played by Robin Williams and Pam Dawber make it back to their own time and live happily ever after?

The Prisoner - Six escaped but will it all repeat itself?

Sliders - Did Rembrandt survive?

The Sopranos - Worst ending of all time.

Terminator: The Sarah Connor Chronicles - John jumps to a future that doesn't know him.  And we'll never know how it turns out.

Twin Peaks - Agent Cooper is possessed by Killer Bob.  Spooky, effective, but, darn it, I wanted more.

V - The Starchild is heading off to the alien visitors' planet on a booby-trapped spaceship and...we'll neverk now.

There are plenty more.  Which ones did I leave out?