Doctor Who episode 387: The Ark in Space – Part Two (1/2/1975)
A lot of this feels like it was written for Pertwee, particularly the Doctor’s first encounter with the revived Commander Noah which includes the very third Doctor line, ‘My dear man, if you think for one moment we’re laying claim to Earth, you couldn’t be more mistaken.’ Obviously after half a decade it’s hard for even a writer as witty as Robert Holmes to immediately divorce the character from the actor, or to predict the cadence of Tom Baker’s speech. Equally, at this early stage Baker isn’t redlining chunks of the script or proprietorially declaring he knows the Doctor better than anyone (or being indulged in that). This is one of the interesting things about Baker’s first and final seasons, both coinciding with a new production team under the guidance of Barry Letts, they feel more transitionary than any others in the classic run.