- Kings deserved a better marketing campaign, and a first chance really, NBC axed this show so fast.
- FlashForward should get another shot.
- Jericho deserved a 'real' second chance - as in something more than "We've paid for a couple of episodes and you all better watch or we're going to fuck around wit-.. enough of you didn't watch, it's dead".
- Firefly.
- Arrested Development probably wouldn't have found a larger audience, but it'd have been nice if it continued.
I don't really know if any of the shows would actually have found a large audience, but they would have done better w/out network tinkering or a chance to complete their story arcs.
Enterprise (Yeah, I liked this one too. Not making any excuses.)
Enterprise unfortunately had terrible early seasons with a couple decent episodes hidden among them. In the fourth season it started to turn around, but by then it was axed. The last episode is still really bad.