Still fresh in our minds six decades later, not for a fantastic set or a special effect but instead for a clever script by a real sci-fi writer and one perfectly cast guest star and her sincere performance. There's a lesson here.

Stories that beg us to feel sorry for hardware are bad enough, but to feel sorry for animatronic company logos is just another attempt to make us think that mega corporations are people too and deserve human rights, so we'll stop asking for ours.

Just because we've built a machine that mimics emotional responses successfully enough to fool ourselves into responding with our own, does not mean that the machine has feelings.

Planets are numbered from the closest to their star outwards (eg Earth = Sol 3), so even if Ceti Alpha 6 exploded (how? why?), Ceti Alpha 5 would still be the 5th planet. Ceti Alpha 7 would become the new Ceti Alpha 6. This plot twist only works if it was Ceti Alpha 4 exploded, or perhaps Chekov drinks on the job.