"Walking Dead' fans spent a month waiting to hear what became of Glenn's fate, and now they have their answer.

Throughout TV history, cliffhangers have brought on some of our greatest collective moments of tension, anxiety and excitement, and sparked some of our greatest collective outrage when they failed to deliver the promised big bang.

So how will last night's show be remembered?  History will tell but take a look at our 2 Minute History of TV Cliffhangers to see some of the greats.

Richard Rushfield is Editor in Chief of Hitfix