I enjoyed Firefly. I liked Whedon's take on a sci-fi future and the bantor and humor he creates for his characters, like in BTVS and Angel. There isn't a great emphasis put on the science and tech like in Trek, but I think a lot is put into the characters. It often feels a bit like a "western" set in space. Like nuBSG, humans seem to be the only kids on the block. No aliens with fake foreheads or nose ridges, and no shrieking, bumpy, oversized salt shakers with plungers sticking out the front.