I, Claudius

I, Claudius was a novel that the Tenth Doctor noted made the Roman Emperor Caligula look worse than he really was. (PROSE: The Lonely Computer)

Behind the scenes
The novel has been adapted several times:
 * David Warner played Claudius in the 1972 stage adaptation.
 * Derek Jacobi played Claudius in the and Augustus in the . He also narrated two abridged audiobook versions.
 * Brian Blessed played Augustus in the 1976 serial.
 * George Baker played Tiberius in the 1976 serial.
 * Fiona Walker played Agrippina in the 1976 serial.
 * Tom Goodman-Hill played Claudius in the 2010 radio adaptation.
 * Tim McInnerny played Tiberius in the 2010 radio adaptation.
 * John Friedlander was the visual effects designer on the final episode of the 1976 serial.