YMMV / Upstairs Downstairs
The Original Series
Crowning Moment of Awesome: "Guest of Honour", where King Edward VII comes to dinner at Eaton Place, a huge honour for the Bellamy family AND staff.
Ear Worm: The theme tune. Used on the radio 4 PM show with a section called 'Up Shares, Down Shares' and lead to a large series of remixes. Still possible to listen to here.
Growing the Beard: The first two seasons are much more light-hearted, and (with the exception of "Guest of Honour") much less popular with critics and viewers, than the third and fourth seasons.
Les Yay: Interpret Rose and Sarah's friendship as you will.
Tear Jerker: James's suicide note.
The relaunch (2010 onwards)
Acceptable Political Targets: Obviously, just about everyone is horrified when Spargo and Persie reveal themselves to be Fascists. Spargo ends up repenting, while Persie goes off to Nazi Germany and becomes a kept woman.
Neville Chamberland, full-stop, as a punching bag for forcing the country to appease Hitler.
Crowning Moment of Awesome:
Pritchard rolling up his sleeves and delivering Agnes's baby.
Pritchard: Blood panics most people. When I see it, I calm down.... Don't worry, my lady. Mother Nature knows what she's about, and so do I.
THEY SHALL NOT PASS.
Crowning Moment of Heartwarming: "You can't come out here and give him cold dinner. Come in here and give him hot dinner instead.
"No. There's been no mistake."
Draco in Leather Pants: Persie and Spargo; though Spargo ends up reforming.
The Woobie: Hallam and Rachel.
The Duke of Kent also qualifies, mainly during the first series's Abdication Crisis plotline.