Arrested Development. And Firefly.  My number one choice would have been Futurama, but thankfully they brought that back.  God bless Comedy Central.

Also Undeclared, and Freaks and Geeks.  My Name is Earl was pretty awesome too, even though some of the later episodes sucked, I'd still watch it.

Futurama new episodes are pretty solid.

A few of the new ones are some of the best yet actually.


Lol Firefly concept is weird (Space Western) but its such a great show.

This! And Firefly... :(

Yeah I always find it strange Firelfly was cancelled so fast, and yet we had to suffer BattleStar Galatica go from greatness to becoming incredibly overthetop and silly in the end.

"Cupid" (1998) with Jeremy Piven and Paula Marshall.

It only lasted 13 episodes, but I loved all of them.

this wasnt really cancelled but id like dragon ball z back only to fix that rubbish ending it had.

Blackadder, Red Dwarf, Quantum Leap, The X-Files.

Jericho
That show had so much potential....

Swat Kats
Invader Zim
Pushing Daises
Dead Like me
Jericho
Angry Beavers
Hey Arnold
Heroes
Kyle XY

There's more that's just not coming to mind. Also, I'm not counting shows that weren't really but just ended. Like Monk and Prison Break (I see a few people doing so)