Topic title explains all.
What TV-series, probably American, have you followed/fallen in love with/despised/watched over and over/are you looking forward to for next season/turned into your guilty pleasure? Just to be ahead of any confusion, I am not talking about Anime-series. There have been enough topics about that.
My list (in semi-random order):
Battlestar Galactica -- Brilliancy. Extremely good series. Might be the best on TV right about now (only to be matched by one other). Plot is awesome, mindfracking all the time, great cast, great story. Just great.
Watch: If you like a mindthrilling, extremely good drama-thriller in space. With lots, and I mean lots, of twists.
Do not watch: If you hate SF, are more the Gilmore Girls -type.
Veronica Mars -- Guilty pleasure. But hell, I don't give a damn. I love this. Might be the best on TV right about now (only to be matched by one other). It just has it all. The story completely sucks you up, keeps asking for more. Well, I really don't know what else to say. Together with the other one the only series that got me to skip food, sleep and many other things. I just had to see another episode.
Watch: If you're not a complete idiot. If you secretely like series in somewhat of a highschool-setting. Like plots that are almost unpredictable, yes you read it right, really unpredictable. Just watch it all damn right!
Do not watch: If you've got testosteron bottled up in your room because it wouldn't fit into your body anymore. If you're too cool and sleep with a teddybear.
Prison Break -- Good. Very decent series. Friend of mine once put in this way "It does it's thing. It does that in a very, very good way though." Don't expect the best plot ever, it's good though. Suspense, high risk of failure, outsmarting and being outsmarted, careful planning. That sums it up really boldly.
Watch: If you've always wanted to break out of prison but just never managed to actually get there. Like suspense and the above-mentioned. Sarah Wayne Callies.
Do not watch: If you'd rather know what happened on the latest episode of Everwood or Will & Grace.
Boston Legal -- Now this is hilarious and brilliant at the same time. William Shatner and James Spader are the greatest lawyers ever. Jokes that surpass the "yeah-that-was-fun-level" with ease. Dialogues: Superb.
Watch: If you like William Shatner or James Spader. If you've got an "educated sense of humour".
Do not watch: If you dislike good series and thought Grey's Anatomy rocked.
Scrubs: Fun. That describes it in one word. Let's use two though: Great fun. Nah, three is better: Super Great Fun. Care to hear some more?
Watch: If you're not a-hilarious.
Do not watch: If you are. If you die while watching hospital-series.
So, short:
Official Love/Adore/Best-list:
Battlestar Galactica
Veronica Mars
Great list:
Boston Legal
Prison Break
Hilarious-list:
Scrubs.
Official-Despise (Go to Hell and Die-list):
Gilmore Girls
Sex and the City
Grey's Anatomy
Any series like these.
If I could name one series you have to watch: Battlestar Veronica Mars.
That's it for me.