The wire is dull... gave up. The Shield is FAR better. REALLY REALLY good.

Entourage
Alias
Weeds

are some not so mainstream ones that are all superb! REALLY good

Some all time classics are the obvious ones that are must sees..

Sopranos
24
Prison Break

I am currently REwatching all of the 7series of 'The West Wing'

STUNNING TELEVISON! Loving it.