Writing wise... Breaking Bad is the best show on TV. 24 was my top.. Dexter sort of fell on its face last season a little bit.. My top 3 non comedy- Breaking Bad, 24, Dexter.
Best HBO/Showtime/etc.. mini series on is "The Game of Thrones" Seasons 1 and 2 are over with season 3 starting in November I think. Awesome show... Gladiator is also good.