The Office

Michael hires a new office assistant and causes outrage in the office -- Kathy Bates and Evan Peters Guest Star.

Michael starts going to his mandatory counseling with Toby but acts out like a child.

Andy tries to impress Erin at his local play.

Michael contacts all his ex-girlfriends -- Amy Ryan , Melora Hardin , Nancy Carell , Amy Pietz , and Linda Purl Guest Star.

Michael takes matters into his own hands when someone starts stealing clients -- Timothy Olyphant Guest Stars.

Halloween is in full swing at Dunder Mifflin -- Timothy Olyphant ("Deadwood") Guest Stars.

Pam and Jim's baby gets christened.

Erin holds a "Glee" viewing party at Gabe's house.

Ryan gets the office invested in his Internet start-up. Kathy Bates ("The Blind Side") and Jack Coleman guest star.

Michael is on a mission.

Michael is thrilled when Toby takes a leave of absence. Amy Ryan ("Gone Baby Gone") Guest Stars.

Michael is thrilled when Toby takes a leave of absence. Amy Ryan ("Gone Baby Gone") Guest Stars.

Michael anxiously awaits the results of Holly's engagement ultimatum - Amy Ryan ("Gone Baby Gone") guest stars.

Andy holds a seminar in order to make sales -- Amy Ryan ("Gone Baby Gone") Guest Stars.

Michael goes missing after Jim has an emergency -- Amy Ryan ("Gone Baby Gone") and Linda Purl ("First Monday") Guest Stars.

Amy Ryan returns as Holly and her relationship with Michael continues to blossom.

Michael debuts his feature film and screens it for the office. Amy Ryan, Melora Hardin, Rashida Jones, Linda Purl, David Denman and Andy Buckley guest star.

Former co-worker Todd Packer returns to the office looking for work, but will his former office mates push for him to be re-hired? Amy Ryan and David Koechner guest-star.

The office holds its first garage sale in the warehouse, while Michael finally pops the question to Holly -- Amy Ryan guest stars.

Michael trains his replacement -- Will Ferrell guest stars.

Michael passes the baton to Deangelo for his first official task- hosting the Dundie Awards - Will Ferrell guest stars.

Michael says his final goodbyes to the office. Will Ferrell and Amy Ryan guest star. Part 1 of 2.

Michael says his final goodbyes to the office. Will Ferrell and Amy Ryan guest star. Part 2 of 2.

Deangelo plays favorites by creating his own "Inner Circle" - Will Ferrell and Cody Horn guest star.