Re: Best scifi cartoon series?
Rocko's Modern Life?
If one considers those science fiction cartoons you're making the term so broad as to be virtually meaningless (as same criteria will include the Simpsons, South Park, et cetera).
'Spock is always right, even when he's wrong. It's the tone of voice, the supernatural reasonability; this is not a man like us; this is a god.'
- Philip K. Dick