"Doctor Who" is getting a dose of "The Avengers" ... no, not the box office smash hit, but the fan-favorite 1960s series. Dame Diana Rigg has signed on for a "Doctor Who" guest spot.
According to BBC, Rigg, known as Emma Peel to "Avengers" fans, and her daughter Rachael Stirling will star side-by-side in an episode of "Doctor Who" set to air in 2013. This will be the first time the two have worked together on screen.
