The SyFy channel has been very innovative with original scripted series. This is a list of the best series that had episodes originally airing on the Scifi/SyFy channel, even if their first seasons aired on other networks.
http://www.ranker.com/list/best-original-scripted-syfy-network-series/lanayoshii,
Andromeda
Battlestar Galactica
Warehouse 13
The Outer Limits
Being Human
Haven
Lost Girl
Alphas
Continuum
Defiance