Nip/Tuck awsome
House awsome
Carnivale awsome

I would also suggest:
<b>Studio 60 On The Sunset Strip</b> (just started running in the states so I don't know if you guys can get it...) - Mathey Perry is hilarious in his TV comeback

<b>Numb3rs</b> - really cool and geeky show about using math to solve crimes. Sometimes the characters are a bit dry but other than that it is a really interesting and intriguing show

<b>The Close</b> - another crime show but this time we are not presented with the forensics of the crime (eg CSI franchise) but instead we see an investigator who is A) a woman, B) gets the truth out of ya no matter what, C) is from the south, D) is extremely blunt.

<b>Psych</b> - a commedy about a self proclaimed psychic detective who just happens to have a really sharp mind and no psychic abilities what so ever

<b>Monk</b> - well nothing beats a OCD (opsessive compulsive disorder) detective who can't shake hands becuase of germs :).