Well, since House and Community are both on break for the summer, I'd have to recommend True Blood. Season 4 just premiered on June 24. Also, reruns of Bones, CSI (Vegas), Criminal Minds, Law & Order (SVU and Original), etc. are all good choices. But of course, I like the criminal stuff. Community is just good solid humour, though. I suggest checking it out before the new season starts. Season 1 is on Netflix and season 2 is... on... the internet?
Yeah I know what you mean. I originally thought "great another crappy cop drama on network TV" but I watched one episode a while back and thought it was pretty good. Then I started watching the USA marathons and grew to love it.