I was very confused by Office tonight. NBC needs to be worried about a lot of people making this episode their series finale and tuning out. They've put so much emphasis on setting up Michael's goodbye that Jim, Pam, Dwight, etc. just feel like support characters and it doesn't feel like the show could go on with just them.
Also, they're using something of a gimmick to keep interest up by bringing in guest stars for the season finale. I'd be more interested in what happens next if they had some good storylines going. But instead, they've been ending the other characters' storylines (Erin/Gabe/Andy triangle seems finished after Michael's goodbye to Erin, we recently got closure for Todd Packer and Threat Level Midnight, no recent developments around Jim, Pam, or Dwight).
That said, the Michael Scott character deserved a proper send-off, and several scenes tonight - his tearing up in the lunch room, the letter to Dwight, and the good-bye scenes with Jim and Pam - were all touching and well-acted.