Television without Joss Whedon is like popcorn without butter. There’s no point.For avid fans who followed “Buffy the Vampire Slayer’s” seven-year-run, “Angel’s” five-year trek and “Firefly’s” less-than-a-season damnation by the television Powers That Be, there’s just a lot of dead air out there.Sure, there’s plenty on. But for those of us with little time to spare, the appeal isn’t there. “Lost” seemed like a good option at first, but, well, I got lost and will have to catch it on DVD at some point. “Supernatural” was worth giving a go, but the predictability turned me off fast. “Masters of Horror” looked worthy of an hour a week, carved out of my busy schedule. In fact, I even bought a subscription to Showtime just to see it. Beyond a few exceptional episodes though, the flavor’s gone flat …