Michael comes in wearing a green tie, and sees that Erin has put out a bowl of green M&Ms. "Nature's Viagra!" he brogues cheerfully. "Two of my favorite joke areas combined. Gonna be a good day." For him, maybe. The rest of us are liable to find this episode's jokes disappointing.

Kelly and Ryan enter the bullpen bickering about something, and Meredith tells them not on St. Patrick's day. It's her one perfect day with no hassles and no kids. Ryan wonders what she means by that. "Not today," she says. Michael VOs about the significance of St. Patrick's Day, as we see various employees modeling their green garments: "It's the closest that the Irish will ever get to Christmas."

It's Jim's first day back from paternity leave, and everyone gives him a big greeting -- except for Dwight, who has put his, Pam's, and Jim's desks together into one giant "Megadesk!" I used to work at a Megadesk!, but it came that way. Also, we called it the podium, and the "surveillance" computers were limited to phone activity rather than hallway camera feeds, and the "gaming" computer was more like the "recaps" computer. "Jim's like, "Okay," and starts dragging his part of the desk back into place without bothering to move any of Dwight's crap off of it. Dwight talking-heads about "Tweedledee and "Tweedledumb-ass," the latter of whom is back. "Yes, getting hooked on Megadesk! was my own damn fault." But he doesn't want to point fingers. He just wants more and more Megadesk!

Jo Bennett enters, with Gabe and her two giant dogs in tow. She THs that this is her last day at the Scranton branch. She says she'll miss the place, and the people, and the snow, which her dogs love peeing in. "Makes me think they're onto somethin'."

Jo has her workspace set up in the conference room, and Michael brings her a little gift: a literal lump of coal. Except it's presented all pretty in an acrylic cube from the Anthracite Museum. Jo thanks him and kids around a bit, and says if he ever comes down to Tallahassee, "You got a place to stay." She's just being overly polite, but Michael, because gestures of friendship directed at him are so rare, figures he's in.

Andy visits Erin at Reception, modeling a kilt. "It's actually my sister's old field hockey skirt," he tells her. He THs that it's their first date, and it has to be perfect, as he knows from How I Met Your Mother.