SPOILER ALERT: heaps, but only for the bad seasons not worth watching.
20. Homeland
Remember when Homeland was one of the smartest, most subtle dramas on TV? When each episode pivoted on the finer points of trust and betrayal? And then remember when it... stopped?
At the end of the first series, Homeland had an excellent opportunity to wrap up the Carrie - Brody story in a way that would be both fitting and shocking. Instead it didn't, and the starcrossed lovers sooked around the world, shooting anyone who threated their bae.
19. Felicity
Many people think that Felicity jumped the shark when she cut her hair. Those people are ignoring the TIME TRAVEL. JJ Abrams just couldn't help himself.
18. E.R.
No, you cannot replace George Clooney with John Stamos.
17. Battlestar Galactica
The All Along The Watchtower sequence at the end of the third series is one of the great season endings. And then, a couple of years later, we pick back up in a magical world, missing the hard sci-fi edge the show's fans had come to know and love.
16. Grey's Anatomy
Grey's has killed off nearly every major character in the past few years, most recently the show's lead, Derek 'McDreamy' Shepherd. But why is it that the deaths of half a dozen original characters have never been as meaningful or as emotional as its first major death, Denny? And remember when we liked both Katherine Heigel and Snow Patrol?
15. Glee
After they made it to Nationals, won, and the show split in two... this was when we stopped believing.
14. The O.C.
The O.C. had a magnificent first season, but could never recovery that glory. All the lesbian love affairs, drug addictions and junkie boyfriends couldn't hide the fact that Mischa Barton was flatter than the Cooper's poolwater. Her only truly believable moment was here, as a lifeless corpse weighing Ryan down. And even then, it's mainly Jeff Buckey.
13. True Blood
The glory of True Blood always lived in the lines of its most badass characters; Eric, Lafayette, and Pam. Then midway through series 4 suddenly Lala has PTSD, Pam is sad and her skin is terrible, and Eric is doing some kind of Tara-from-Series-4-Buffy impression. The dangerous and explosive sexual tension he and Sookie had built up over years fizzled out the moment their soft-focused, Bambi in Narnia sex began.
12. The Office (US version)
As much as he wanted to be its brains, spine and funnybone, Michael Scott was always the heart of Dunder Mifflin. Ironically, when he left, the show careered around for seasons, as if they had actually lost a genuinely competent manager.
11. Dexter
There's a lot of argument as to when this show became the most ridiculous thing on TV. Was it when everyone thought Dexter was a good guy? Was it when the serial killer was the most obvious ghost ever all along? Was it when Dexter ended up on a manhunt after... himself? Or perhaps one of the other scenes that are harder to bring to mind, and thus to find on youtube? We don't know, but we do know the show lost its way. So let's relive a moment of infinite potential; an opening title sequence better than most entire shows.
10. Parks & Recreation
This one is controversial. P&R remained entertaining and charming until its very end. But in its final season it seemed to have run out of ideas; the end of Series 6 was so perfectly charming that it may well have been best to leave it there. The world had jumped forward three years and it was all potential ahead. The ending of the show proved that sometimes questions are best left unanswered.
9. Weeds
Another desperation induced time-jump, more introductions of superfluous characters... Weeds was a veritable obstacle course of sharks. But the igniting flame of its demise lay way back in Season Three, when the family left Astoria and thus left behind any potential for peeking through the blinds of suburban perfection.
8. Downton Abbey
This is a tricky one - despite Emmys and accolades, Downton Abbey was always a soap in snobs' clothing (if you've seen the show, you'll get that the use of the word 'soap' there is actually an hilarious pun on a particularly shlocky plot twist. If not, carry on, nothing to see here). As the show went on, its upstairs-downstairs charm was lost amidst sudden deaths and mysterious murder plots. At least Maggie Smith's acerbic wit still shines through.
7. Misfits
The Misfits' Nathan was like the world's yappiest puppy, or Chris Leben. You think they're super annoying, but when they're not there, something is missing.
6. Brady Bunch
Oh, a cousin we've never heard of. Maybe Cousin Oliver was actually a stray neighbourhood boy possessed by the spirit of the mysteriously missing dog Tiger? When you think about it, it's really obvious. Look how puppish and enthusiastic he is!
5. X Files
Main character leaves. DRINK. Nobody else can smoulder like Mulder. SMULDER.
4. Scrubs
Scrubs rebooted for its ninth season in spectacularly disasterous fashion, casting a new bunch of wide-eyed medical students to learn from a bunch of doctors who had apparently quit doctering to teach, for some never-foreshadowed reasons. But the show had been sliding for years; Scrubs was a show that originally balanced silliness with sacchrine, but by around Season Six it had fallen in to the pond, and then Zach Braff got ideas, we were all too nice about Garden State, and here we are, dealing with one of the most myopic, self-indulgent kickstarted wankfests to ever have existed. Here's a moment from one its last truly great episode, the musical.
3. Roseanne
Remember when Roseanne the show had to explain the strange changes to Roseanne the star's face, and someone in the writers' room went, "I know! Let's take a show beloved for its working class setting and make them win the lottery!" Once the hangover cleared, the creators realised this was a terrible idea, so redacted the ENTIRE ninth season by saying that it was all elaborate fan-fiction written by Roseanne herself to help her cope with the death of Dan. Sarah Gilbert has since come out to say that she was suffering from substance abuse during the filming, and can't really remember it. We can't help but be a little jealous.
2. Dallas
Remember how your primary school teacher told you never to end a story with 'and it was all a dream?' Well, whoever was in charge of Dallas was sick that day.
1. Happy Days
If the Fonz was so cool, why didn't he have any friends his own age?