This episode is so phenomenal! Good character developments, and relationship developments, and fantastic songs!
I adore Puck and Lauren. Puck is just so adorable whenever he sees/is hanging out with Lauren. It makes me smile. :)
Kurt and Blaine - FINALLY! Glad they didn't pull a Nuke and make us wait for years for that adorable kissing scene.
The Triangle: I wish that Rachel would find someone new. I can see the appeal of Finn (the looks, the voice) but I can also see how Rachel could do so much better. She needs someone smarter, and someone who will travel with her. *shrug*
I do think that they've kind of taken one step forward and two steps back with Santana. I think that by having her stay with Sam (even though she practically publicly mocks him) they're putting her back into the closet. I know that she never declared herself lesbian (it's quite possible that she would identify as bisexual if she believed in labels) having her stay with him after she basically professed her love to Brittany really cheapens the emotions of the last episode.
The songs! I liked both Puck's song, and Mercedes' song. And, of course, Rachel's song was absolutely stunning and gorgeously sung - very emotional and very Rachel.
The finale song was epic - the Glee "L" and the glitter!slushies were fantastic touches.
I don't really care for the girls' outfits for this, but as someone pointed out to me in the comments on Hulu, it does illustrate the emphasis on uniqueness and outcastness that the New Directions represents.
R.I.P Pavarotti.