Top three IMO would have to be: 1- Dexter 2- Entourage 3- The Unit To be completely honest, not that many other American shows have really grabbed me, although I've yet to watch The Wire and Deadwood, which I've been assured I'll enjoy. Didn't include any sitcoms, because they tend to be good one week, shite the next, but Two & a Half Men would have to get a nod.