Doctor Who episode 746: Human Nature (26/5/2007)
‘No man should hide himself, don’t you think?’ Given it’s a fairly straight adaptation of the most acclaimed of the tie-in novels, this is unsurprisingly great. In theory, it’s a fairly standard sci-fi trope (e.g. Buffy: Normal Again; WandaVision; Superman II; Deep Space Nine: Far Beyond the Stars), of a lead character becoming “ordinary”. This gives David Tennant the chance to create John Smith, a character distinct from the Doctor (although with anachronistically great hair) and play a slightly useless human, while Freema Agyeman gets to be the protagonist, desperately looking for a way to foil the alien killers looking to possess a Time Lord and make themselves immortal. The complication is that the Doctor hasn’t accounted for the human factor and falls in love, and not the dramatic, Rose and the Doctor kind of love, but the awkward, clumsy, human sort of love.