Sorry for the necro, but it seems appropriate since the show just had its last episode ever.
What did people think? I didn't watch it because I haven't watched The Office since the third season, but a lot of people I know still watch it, and I looked up how the episode went. The finale sounds alright. I'm glad that that dumb subplot with the sound guy on the documentary crew was brief, and was meant to be a red herring.
It was, in a word, fantastic. They really ended the show on a high note.