series recommendation

[Teban]

hmm
Supernatural
Dexter
Chuck
True blood

[nye]

Eastbound & Down if anyone wants some good old laughs at Middle America's expense.

[Itzik007]

24
prison break
sopranos

[eJoyB]

I'm glad that someone else has also suggested this series,
I'm talking about "The Wire" is one that definitely deserves your time and attention.
It's an HBO series of course, kind of a guarantee of a good series.
Even if you are not in this whole rap, life on the street, drugs, police, jail, money, corruption thing, it still is a good watch!
Based on real life stories and documents, it delves deep into the characters and their way of life in Baltimore. Really cruel and cold at times, but also touching at other times.

Apart from this awesome production, i will also suggest
Farscape
Battlestar Galactica (the new one)
Babylon 5
those 3 above are the scifi kind and really are precious! a must see if you are into this category. (you could also consider Stargate and Firefly)

continuing, other great tv productions in my humble opinion would be
Jericho
The unit (pretty propagandistic for the american army, but apart from that it's a pretty good series)
24, Prison Break, Lost (obviously no need for introductions for these 3)
Rome,
Sleeper Cell
Californication, and Friends (the best lines and immediate responses i've seen, these guarantee you a good laugh)

[hijump]

Married With Children
Prison Break
Blue Mountain State

[Timmydoo]

The Office.
Nikita.

[thetrader]

Dexter FTW.
In my opinion, this is simply the best !!!

[freakadude]

I'm digging Nikita

[Pirate90]

Dexter is for me number one

[wildman082]

I think Mad Men is the best show currently on television. Some other greats are Breaking Bad, Boardwalk Empire, and Bored to Death.