Best Classic Cliffhanger?

The more I think about Nyki2's comment, the more I think he has a legitimate point and the more I realize my love of City of Death is taking over my life and decisions. OK, not really but a better cliffhanger and one I should have put down is when the alien steps out of the sarcophagus and kills Namin (Pyramid of Mars, Episode 1). Oh, and if you're wondering about that extra vote, I was scrolling down and accidentally clicked the Remembrance of the Daleks option.