We're looking for a sci-fi series to watch. Any suggestions?

We have taken to buying and downloading various series and are about ready for a new one. Thus far we have enjoyed most of the Star Treks, Babylon 5 (we re-watch that every other summer), Farscape, Sanctuary, Fringe, Doctor Who (Tom Baker, David Tennant and Matt Smith), and Torchwood. On occasion we have watched episodes of Warehouse 13 which was just okay. As well, we have enjoyed the few episodes of Eureka that we’ve watched.

At this point, we’re thinking that Eureka is the winner, but I’d love to hear some of Fluther’s suggestions based on the things we have already liked.