It's hard to order these, mainly it's because it's like timing olympic sprinters - the difference between first and second place is dealt with in microseconds.
So I'm just creating an uber-post.
Honourable Mention - The Day Today and Brasseye
Michael Palin described it as the true successor to Monty Python, and it's pretty much the UK equivalent of South Park. So controversial, that Channel 4 was forced to apologise to the public for one episode. Both produced by the same teams, The Day Today and Brasseye was ingeniously well-made parodies of the news. So well done that most people recall the first time they saw the show with, "I thought it was the real news until I realised that they were talking about John Major punching the Queen". It hysterically funny.
Honourable Mention - Heroes
This show is brilliant so far, but it has some annoying aspects such as Peter Petrelli suddenly becoming "Neo", and Suresh's terminal stupidity. But on the whole, ths show is ridiculously engaging, mystifying, and addictive. It's started slowly, but it's effectively building up both plot and character, properly, with each new episode.
Honourable Mention - Monty Python
It's a seminal comedy show that pretty much spawned imitators that continue to copy it today. However, it pisses me off. You can't get the complete collection of the most influential British comedy show in Britain because the music on it is owned by several different companies. Which is disgraceful. I want my Python, dammit!
Honourable Mention - The Visionaries
This is a kickin' cartoon that lasted only 13 episodes. I love the Transformers, and Action Force (that's G.I.Joe), but this is a brilliant cartoon from that era that never had the same fan appeal despite being quite obviously the most well-written of all its peers.
Honourable Mention - Law & Order: Criminal Intent
I buy the DVDs to this as soon as they are available. I'm a sucker for whodunnits and this is the modern-day Columbo. While it delves into pop-psychology too often and the stories can be rather bland, Vincent D'Onofrio is so captivating I can't help but rewatch it. He's bloody outstanding.
Honourable Mention - South Park
As funny as this show is, it can too easily fall to viewer fatigue for me. What I mean is, I really have to be in the mood to watch an episode a second time, which is why I don't own them on DVD yet. Regardless, when I am in the mood for them, they have me howling with laughter.
Honourable Mention - Deadwood
I only just recently got into this show, but I enjoyed it so much I had to go out and buy the DVDs. Because it's so new, it lacks the emotional resonance the other shows have, but it's startlingly well done. With the exception of maybe one character, there isn't a character I don't love, which is so rare. Not only that, but Ian McShane and Brad Dourif nearly steal the show, they're stellar in it.
Honourable Mention - Star Trek (The Original Series)
The best of the Star Trek's, the strength of this show really lies not just in its strong plotting, but in its characters. Spock is unlike any sci-fi character I've ever seen. He's actually smart. Generally in sci-fi sows you have the 'smart' one but you could drive a car through the holes in their logic. Not so with Spock, a brilliant realised character. Kirk is also superb. The thing about Kirk is despite the over-acting of the show and it's dated appearance - he's more convincing as a man of military authority than most other tv personalities. Yes, the show has a lot of bad episodes, but it has some incredible ones too. And as a friend told me, while the other Trek's have bad episodes, the bad episodes in the original series are classics.
Ten - Buffy and Angel
Unlike many spin-offs, Angel is done by the exact same team as Buffy, so I'm counting the two. I love these shows dearly; they're able to be funny and dramatic with grace and skill, and are genuinely entertaining. While both have rough patches towards the end of their run, they're still two fantastic series, and Angel and Spike are some of the best characters anywhere. That, and it's a show I share with my mum.
Nine - Red Dwarf (seasons 1-6)
Ignoring the crappy last two seasons, this show was what had me laughing all through my adolescence. Every episode is funny as hell, filled with great gags. The cast was small and knowable, and the plots were genuinely interesting. Seasons 4 and 5 are their best seasons, and contain some brilliant sci-fi concepts as well as some fantastic villains.
Eight - Columbo
Everyone knows this guy because he's the best detective ever. Better than Holmes, better than Poirot, Columbo, the humble man in the dirty mac is a genius. Each episode involves the perfect crime being committed and the fun is in watching how Columbo solves it. And he does every time. Because he's Columbo. He doesn't know where he left his notepad and pencil, but he'll find out whodunnit without any forensic evidence. Because he's Columbo.
Seven - Babylon 5 and Crusade
Like Angel, Crusade is done by the same team as B5, so I joined 'em together. While Babylon 5 is at times lecturing, and filled with obvious writing ticks that can only belong to JMS, this show changed US television. Like that sci-fi show with CGI? Babylon 5 was the first live-action tv show to use CGI on a weekly basis. Before them, no one thought it was possible. In an episode of Crusade, they have a CGI human, and it looks terrible because human CGI was theoretical at the time. They pioneered it. Like that drama with a story arc spanning seasons? Babylon 5 is the first television show to have such a story arc, spanning all five of its seasons. And unlike modern-day contemporaries (with the exception of Heroes), it was done properly. There's so much in this show you can watch it multiple times and get new things out of it each time. Top show.
Six - Spaced
This is a British comedy done by the same guys who did Shaun of the Dead and Hot Fuzz. It stars Simon Pegg and Nick Frost and is just brilliant. The show is rather mundane - it's about two people who share a bedsit and their friends. However, they so sublimely slip into the show references from films, television, comics, books, and everything else that they can think of, they exalt the mundane trials and turn it wonderfully surreal. It's a really catchy show.
Five - Father Ted
It might just be the fact that the Irish accent is inherently funny, but Father Ted is a superb comedy. Centered around the three worst priests in Catholosicm on some ****heap of an Irish island, the show mines the fact that by having the main cast of characters be priests, doing anything un-priestly is hysterical. And it truly is.
Four - Firefly
I'm convinced if this had got a second season it would've taken everyone by storm. Look at the fan following it got from just half a season. Maybe though, it being cancelled helped it, Joss Whedon says they worked much harder because they thought each episode might be their last. And maybe it's because Nathan Fillion is just that damn good. I don't know. I don't care. This show is just heart-breakingly well done.
Three - The Sopranos
The Sopranos is just... wow. There is so much in each episode, and they way episodes build on one another is nothing short of extraordinary. The characters are incredibly engaging, so much so you really feel for them despite their being bigoted murderers. This show is so well done you love the devil.
Two - The Simpsons (seasons 3-6)
This show pretty much determined my sense of humour. Come on. It's the Simpsons. Everyone loves this show. The seasons I mention though are really the only ones I find so funny that there isn't an episode I don't like. Almost every show is a 'best of comedy' show. What's more amazing is that not only is it relentlessly funny, but the stories are exceedingly good. If you notice, they all start off somewhere which has nothing to do with the main plot, and seemlessly fall into the main plot with grace. One of the best shows ever.
One - Batman: The Animated Series
Considering this site is themed towards superhero comics, it's not too surprising I love this cartoon far too much. It's propbably the best collection of superhero stories anywhere. If someone says "reading is a function of the right side of the brain" they watched this show. And I bet they can not only name that episode, thanks to the wonderful title screens for each episode, but probably hum the theme tune to any Batman villain in the show. The show took superheroes, Batman, and his villains - and improved them all. This did what the Ultimate line tried and failed to do. It did what Marvel and DC comics have both tried and failed to do. It created an entire new animation style, spawned multiple spin-offs including Justice League Unlimited. But as great as those shows are, the original is still the best. And so, I think it's my favourite show ever.