Doctor Who fans have waited nearly four decades for today. Shada -- an episode that began filming in 1979 with Tom Baker as the legendary Time Lord -- is finally finished and available to download (a DVD will be released in the UK on December 4th, and in the US on January 9th). An animated segment and a new scene were produced to fill in the footage gaps, both of which feature Baker reprising his role as the Doctor. To add to the prestige, the episode was also written by Hitchhiker's Guide to the Galaxy author Douglas Adams.