List of Guest Stars

The Office has featured a number of talented actors know for other projects. Below is a list of actors that have had a sinlge appearance or only a few appearances throughout the series.

Season 1

 * In "Hot Girl", Amy Adams makes her first appearance as Katy.

Season 2

 * In "Office Olympics", Nancy Carell makes her first appearance as Carol Stills, Michael's real estate agent.
 * In "The Fire" and "Booze Cruise", Amy Adams returns as Katy.
 * In "Booze Cruise", Rob Riggle as Captain Jack.
 * In "The Client", Tim Meadows as Christian.
 * In "Email Surveillance", Ken Jeong as Bill from Michael's improv class
 * In "Valentine's Day", Conan O'Brien as himself.

Season 3

 * In "The Convention", Jerome 'The Bus' Bettis as himself.
 * In "The Return", Yvette Nicole Brown as Paris.

Season 4

 * In "Launch Party", Kevin McHale as a pizza delivery person.

Season 5

 * In "Business Trip", Wendi McLendon-Covey as Concierge Marie.
 * In "Stress Relief", Cloris Leachman, Jack Black, and Jessica Alba appear in the fictional movie Mrs. Albert Hannaday.
 * Idris Elba as Charles Miner in a 7-episode stint.

Season 6

 * In "Sabre", Christian Slater as himself.
 * In "Mafia", Mike Starr as Insurance Salesman Mr. Grotti.
 * In "The Delivery" (Part 2), Melissa Rauch as a new mom (sharing the room with Pam).

Season 7

 * In "Nepotism", Evan Peters as Michael's nephew Luke Cooper.
 * In "The Sting", Timothy Olyphant as Danny Cordray.
 * In "The Seminar", Ricky Gervais reprises his role from The Office (UK) as David Brent.
 * Will Ferrell recurrs as Deangelo Vickers, the incoming new regional manager in a 4-episode arc ("Michael's Last Dundies", "Training Day", "Goodbye, Michael", & "The Inner Circle").
 * In the season finale "Search Committee", several of the interviewees make cameo appearances:
 * Warren Buffett as himself
 * Will Arnett as Fred Henry
 * Ray Romano as Merv Bronte
 * Jim Carrey as The Finger Lakes Guy
 * Ricky Gervais returns as David Brent.

Season 8

 * In "Mrs. California", Maura Tierney as Susan California.
 * In "Garden Party", Josh Groban as Andy's brother Walter Bernard Jr. and Stephen Collins guest stars as Andy's father Walter Bernard Sr.
 * In "Turf War", Chris Bauer as Harry Jannerone.

Season 9

 * In "Here Comes Treble", Stephen Colbert as Broccoli Rob, Andy's friend and a past member of the acapella group Here Comes Treble.
 * In "The Boat", Josh Groban reprises his role as Andy's brother.
 * In "Lice", Julius Winfield Erving aka Dr. J. of the NBA as himself.
 * In "Paper Airplane" and "Stairmaggedon", Roseanne Barr as Carla Fern
 * In "Promos", MLB player Ryan Howard as himself.
 * In "Livin' the Dream", Michael Imperioli as Sensei Billy
 * In "Finale", Joan Cusack as Erin's mother, Ed Begley Jr. as Erin's father, Rachael Harris as Angela's sister Rachel, and Nancy Walls reprises her role as Carol Stills.