Welcome Back to the Hellmouth
A slightly bananas idea I had to rewatch (for the third or fourth or fifth or seventeenth time, episode depending) Buffy the Vampire Slayer — exactly 20 years after each episode’s original airdate.
Welcome Back to the Hellmouth: "Nightmares"
“Nightmares” is one of season one's stronger entries, though it doesn’t hang together perfectly. It feels a bit like two halves of different sandwiches; they line up, but they still don't match. (One of those halves is the Master, and the other half is the nightmare plot, in which the Master essentially has a meaningful cameo.)