It's a cross between My So-Called Life, Firefly, Wonderfalls, etc, etc.
I think My So-Called Life worked so well when it was on, it would be hard to keep it up, and would have probably gotten bad after a while, but a few more years would have been great.
Firefly had a great story to tell... and was cut short, which is sad.
Wonderfalls is something that CAN be wrapped up in 13 episodes, and so while it didn't last forever, it's still not as depressing that it's over as say Firefly, for example.
I'd guess I miss My So-Called Life more (Firefly is getting a movie version at least)