The Doctor is back, and he's a lot younger than his predecessors.

26-year-old British actor Matt Smith is the eleventh person to take on the intergalactic Time Lord role on 'Doctor Who'; he joins a long line of acclaimed thespians, including David Tennant (who just hung up his Doctor trenchcoat last year), Chris Eccleston, and the legendary Tom Baker, who played Doctor from 1974 to 1981. While Smith looks strangely like a hybrid of Eccleston and Tennant, he brings a youthful energy all his own to the sci-fi show.

Now that this season of 'Top Chef' is over -- with Michael Voltaggio having been crowned the winner -- millions of viewers will once again face the debilitating syndrome known as PW: Padma Withdrawal. How will we survive another hiatus without a weekly helping of Padma Lakshmi, our exotic guide through the world of haute cuisine? She even made packing our knives and going sound appealing.

To help carry us over to the premiere of 'Top Chef' season 7, here are three more video delights to compensate for the upcoming lack of Lakshmi.

Island-dwelling heroes, martini-swilling Ivy Leaguers and autobiography-penning sitcom actors ... we're talking, of course, about TV land's most beloved canine cohorts.

How much do you know about the most memorable prime-time pooches?

Take our quiz and find out! Be warned: it's "ruff" stuff.