At least, now we have a date. It's only been 525 days since the end of Season 4 (thanks, HuffPost, for doing the math). That was so long ago, I can hardly remember what happened in the last episode. I think Don's still engaged to Megan and Joan's decided to keep the baby (Roger's?) but that's about all I can pull up without Google'ing. It's still 75 more days to wait, but it feels good knowing MM is finally returning, and just in time to save us from the last half of primary season.