“House, M.D.” — Season 5

“House” begins its fifth season on a somber note. With his girlfriend, Amber, dead, Dr. James Wilson (Robert Sean Leonard) finds his friendship with the cantankerous Dr. Gregory House (Hugh Laurie) to be more strained than ever and temporarily leaves the hospital where they work. He eventually returns, which is a good thing, because Wilson is the closest thing House has to a moral compass. The writers of this drama do an admirable job of inserting elements of well-placed comedy into the often-intense vignettes.

“House, M.D.” — Season Four

For Dr. Gregory House (Hugh Laurie), there’s nothing like a good, tension-filled competition to pick his new team of doctors when his old trio of Chase (Jesse Spencer), Cameron (Jennifer Morrison) and Foreman (Omar Epps) leave his fold. Among the 40 newbies vying to earn the coveted spots in the fourth season of House, M.D. are Dr. Lawrence Kutner (Kal Penn, the Harold & Kumar films), Dr. Chris Taub (Peter Jacobson, Transformers) and Dr., uh, Thirteen (Olivia Wilde, The O.C.). Taking a cue from Flavor Flav, House dubs the latter with that nickname simply because he can.