. . .Big Love is back for another season. I heart HBO (and I love that the DirecTV package that includes HBO is just over half the price of a comparable HBO-inclusive package we used to purchase from Comcast cable).
Other U.S. shows worth watching on DVD, if you haven't already seen them:
Buffy the Vampire Slayer
Freaks and Geeks
Seriously. Go Netflix 'em now. Especially Weeds and Lost--and if you haven't seen the first season, definitely check out Big Love.