Matt Smith has only just taken the reigns of the title role in 'Doctor Who' and he is already slated to make a guest-appearance on the spin-off series 'The Sarah Jane Adventures,' according to the BBC Press Office. For those unaware, the spin-off follows the adventures of former 'Doctor Who' companion Sarah Jane Smith as played by Elisabeth Sladen.

Also joining them in the same episode is former 'Doctor Who' companion Jo Grant. She'll be played by Katy Manning, who is stepping into the role for the first time since 1973.

And to round out the news trifecta, the episode will be written by the creator of 'The Sarah Jane Adventures' and the man responsible for bringing 'Doctor Who' back to television, Russell T. Davies. This would mark Davies' first time writing for the character of the Doctor since he left the series (and it could be argued that it's his first time writing for Smith's Doctor).

Mind you, Davies writing was never particularly impressive on the series in terms of science fiction. Davies' strength tends to be writing about relationships, and having the Doctor in a room with two of his ex-companions (which for the Doctor would be the equivalent of ex-girlfriends) is enough reason to tune in.