Agatha Christie's Marple
5x04 The Mirror Crack'd From Side to Side [season finale]
ITV's glut of Marple comes to an end with perhaps her best-known case (and it feels a rarity to see them adapt a story she's actually meant to be in). A rather good one it was too, with a grand twist; a better adaptation than the other version I've seen, though I did miss that one's excellent opening scene.
[Watch it (again) on ITV Player.]
2x06 The Mask [2nd watch]
How I Met Your Mother
6x02 Cleaning House
[Watch it (again) on 4oD.]
Upstairs Downstairs 
Part Three The Cuckoo [final episode]
Ultimately, I rather enjoyed that. It's nice to have a drama series that wraps everything up with a proper happy ending these days, too -- the lack of cliffhanger was refreshing. More please!
[Watch it (again) in HD on iPlayer.]