The 20 Best Cliffhangers Ever Shown on Science Fiction or Fantasy TV

The best science fiction and fantasy television hooks you with endless suspense... including hair-raising cliffhangers. But only the greatest cliffhangers can make you throw your remote at the screen, and keep you wondering for weeks. Here are the 20 awesomest. » 11/22/12 10:00am 11/22/12 10:00am

Most frustrating TV shows canceled on a cliffhanger

As the fall TV season starts up, shows are resolving their agonizing summer cliffhangers — but for some unlucky shows, that resolution never arrived. Here are the most frustrating "cancel-hangers," cliffhanger endings for shows that got cancelled too soon. » 9/21/10 3:30pm 9/21/10 3:30pm