All the tube news that’s fit to surf …

– Great news: Mad Men will return for its third season on A&E in August.

– Bad news: Dennis Rodman‘s goin’ to rehab. The good news: Since he’s obviously not averse to making a boob of himself on TV, now he can sign up for Celebrity Rehab with Dr. Drew Pinsky.

– Old Christine may get a new home. If CBS dumps the Julia Louis-Dreyfus sitcom The New Adventures of Old Christine, ABC says it’ll take the leftovers.

– The CW has decided to pull the plug on its Sunday night programming.

– Cap’n Jack (John Barrowman) is making an appearance in David Tennant‘s final Doctor Who ep.

– Jennifer Hudson won an Oscar, and now another American Idol alum could win a Tony, as Constantine Maroulis snags a nod for his role in the musical Rock of Ages.

– More Idol news: Paula Abdul‘s singing on tonight’s “Rock Week” episode.

– And still more Idol news, news that should make the aforementioned Ms. Abdul quite happy: TVGuide.com readers have spoken, and nearly 60 percent of them think newbie judge Kara DioGuardi should turn in her Coke cup after this season.