(If you want to see how it ends, however, there's only another dozen episodes to go.)
The only thing harder than creating a good show in the first place is fixing a good show that's gone bad. That almost never happens.
Here are a few shows that you can drop from your weekly rotation, if you haven't already.
Revolution • It started off with an interesting concept, but it's implausible and — quite frankly — a giant bore.
Two and a Half Men • This show didn't run out of gas because Charlie Sheen was fired, it was running on fumes long before that.
Hot in Cleveland • Love Betty White — love the entire cast — but this is a repetitive, unfunny half-hour.
Glee • This is a case study in how to take a good show and make it unwatchable — beginning with the atrocious writing.
New Girl • It still has its moments, but getting Jess (Zooey Deschanel) and Nick (Jake Johnson) together has pretty much ruined this once-funny sitcom.
The X Factor • It's not so much a comment on this show as it is a comment on judge Simon Cowell. After all those years on "American Idol," his act has worn painfully thin.
Grey's Anatomy • At this point, there's pretty much nothing that happens on this show that doesn't feel like something that's already happened on this show.
True Blood • This used to be hugely fun to watch despite being borderline insane. Now it's just a mess.
Defiance • Another science-fiction series that launched with a strong premise but faded. Heaven forbid Syfy should actually do a show about outer-space aliens that takes place in outer space.
The Neighbors • This show about fish-out-of-water aliens living in suburban New Jersey always seemed like it had a limited lifespan. And that's expired.
Homeland • Sort of pains me to say this, but this once-great show has lost a lot of its lustre — in no small part because of an inability to see that the Brody character had outlived his usefulness.
Witches of East End • This series got off to a strong start, but turned into a bore in just a handful of episodes.
Scott D. Pierce covers television for The Salt Lake Tribune. Email him at email@example.com; follow him on Twitter @ScottDPierce.