I'm through episode 7 right now, and had to take a break. Watched the first two last night (and glad I did, because a few Facebook friends were posting quotes almost immediately after they're said... we must have all started right at 12:01!!!)
I would have to say right now the funniest episode is the Tobias episode, but that's to be expected because he's the most oblivious character to the situations around him. I'm noticing a lack of other characters though with this format; not nearly enough Maeby or George Michael so far, and we've only just started seeing GOB. Hope to finish the rest tonight.