I'm late to the party on this (but not, thankfully, late to the Party), but Colby Armstrong has gotten himself an account on the Twitter, and my God is it a thing of beauty. A sample:
Had one of my top 10 naps of my life just now. It was wrecked by my 3 dogs jumping on me. What a pack of losers
He also likes Fritti. Excellent taste.
UPDATE: Razor tells us that Johan Hedberg is the first recorded instance of a Twittering moose. Amazing, this Internet.