Recommend me something to watch.

Six Feet Under

Studio 60 on the Sunset Strip

Luther

NCIS, Warehouse 13, The Mentalist

Spartacus. 1st season is great, 2nd and 3rd suck, though.

Homeland, Boardwalk Empire, Sopranos, LOST, Hannibal.

If you have not seen them, Rome and Spartacus(sex and violence in every episode).
Deadwood was really good.(western series)
Skins(UK)great drama.(Sex and drugs)
doctor who is great of course, start with series one(2005) and watch some of the older series if you can handle vintage scifi
...and of course, game of thrones, walking dead, and boardwalk empire are the best shows on television. so if you have not seen them, get on it.

Tera Patrick is a pretty neat thing to watch.

Watch NCIS, it's a really good detective CSI-esque series with very serious and sometimes frigthening elements tied in to some overarching stories as well as some really cool moments. Such as one about an abandoned ship that was exposed to a virus that the crew then believe will kill them. Or my personal favourite episode titled "One Shot, One Kill" about a Sniper shooting various Military Recruiters because he was not recruited to be in the snipers like he wanted because he had psychological issues.
Probably my favourite TV series that is about crime ever.
It does help that it does have some very loveable characters.

This.
Here.

Shrlock

Community, Sherlock, Dexter, Breaking Bad and Suits.

If you like Dr Who, Sherlock is similar (cheesy BBC drama,) though I prefer Sherlock.
Dexter is good if you don't watch the last 10 minutes.
The Mentalist
The Following
and The Blacklist

Sherlock, Dexter (skip the second half of the last episode), Battlestar Galactica

watch full modern series doctor who starting on series 1 from 2005. I am doing this right now and I am on the fith season starting mat smith. It's really good, there aren't a lot of references to the classic Doctro who, and if they have, they explain it to you right a way.

I recommend you watch your back

Although it's not a finished season and still ongoing I recommend Agents of SHIELD.

American Horror Story!

Jericho is a good serie....

Archer!

'Reign' is pretty good, not really complete season or anything yet though.

Supernatural!

supernatural and lost :)

Star Trek Enterprise

Leverage is pretty great! It's complete (5 season) and available on Netflix. It has it's funny moments but it's a mostly serious show about an unlikely group of thieves.