Lord of the Rings: Return of the King, especially if I've just marathoned all three movies. Listening to Annie Lennox sing Into the West is part of the experience.
I don't skip the Masters of the Air ones cos I really like them. I like the shots they use and I find the music relaxing.
I don't skip Abbot Elementary cos it's 3 seconds so there's no point
First and Last Episode of any Season.
I like that tradition. Do you remember what started it?