Not sci-fi, but Freaks & Geeks wasn't given a chance.
Yeah, I know fuck all about sci-fi. I have been bummed about early cancellations before though.
On the Freaks & Geeks train would have to be My So Called Life... shut up, I liked it. I think there was only one season?
Stressed Eric was another one... CRAZY cartoon... as far as I know there was only one episode aired, I only saw one anyway. Eric spent the entire time running around with a pair of scissors stabbed in his leg or something and being, well, stressed out. It had a lot of potential, but completely disappeared.