I think there should be a bit of clarification here on what a "canceled" show is. To me, it's something that was cut off by the network, either mid way through or at the end of a season. Shows like Seinfeld, Buffy and Quantum Leap did actually have an ending and acknowledged final episodes. Though with Seinfeld, being that nothing happened, there was nothing to wrap up. Buffy and Quantum Leap did wrap up their story lines.
Here's my list:
Stargate: Atlantis
Dead Like Me
Crusade
Invader Zim
Angle
MST3K
The Dresden Files
Originally posted by: magnux
Dead Like Me... /sigh
You waiting for the DVD movie coming next month, too?