36. The Fourth Doctor's Parisian Affair
From: "City of Death"
Premiere: September 29, 1979
Lalla Ward, cast as the second incarnation of the Fourth Doctor's officious Time Lord companion Romana (previously portrayed by Mary Tamm), presumably didn't have to work too hard to make sparks with Tom Baker – the couple married not long after. Ward, now hitched in real life to Richard Dawkins, is a witty foil for Baker in this larky escapade, partly written by script editor Douglas Adams (of Hitchhiker's Guide to the Galaxy fame) and shot on location in Paris.