^But that's still a lot more than most network SF/F shows have historically gotten. Unless something's a big hit like
Star Trek or
Lost (or on the CW, which seems to drag its shows out indefinitely as a matter of course), even two seasons is an accomplishment, and getting the chance to do a real wrap-up like
Dollhouse did is a luxury. Compared to most genre shows,
Farscape and
Eureka got lucky.
And Greg's right -- it makes no sense to put
Eureka in the "cancelled early" list. After the
Stargate and
Galactica franchises,
Eureka is the longest-running scripted original series in SciFi/Syfy's entire history. It's one of their biggest success stories. (And if you count it and
Warehouse 13 as a shared universe, then it's the second longest-running franchise in the network's history. Although that's cheating a bit.)