Yeah, I agree that Breaking Bad is probably the best non-HBO drama, with the exception of Lost (but that was a polarizing show). I think Mad Men was approaching Breaking Bad territory, but it took a slight step back this season, IMO of course. I think Downton Abbey has the potential to move up the list, but like Mad Men the show has now become massively popular so they'll be making their first season with all the hype now. Will be interesting to see if it maintains what made the first two season so great. I also loved Rescue Me and think it deserves some mention as well.