Editing Late Night with Conan O'Brien (section)

===Sketch actors and cameo appearances===
''Late Night'' employed a number of sketch actors, many of whom were frequently reused in different roles in different episodes. Several years before joining the cast of ''[[Saturday Night Live]]'', and before playing the role of [[Leslie Knope]] on another NBC TV show, ''[[Parks and Recreation]]'', [[Amy Poehler]] often appeared as a regular in many sketches, though she was best remembered for playing the recurring role of Andy Richter's Conan-obsessed teenage sister, Stacy. Other notable comedians such as [[Jack McBrayer]], [[Rob Riggle]], [[Rob Corddry]], [[H. Jon Benjamin]], [[Ellie Kemper]], [[Bobby Moynihan]], [[Matt Besser]], [[Ian Roberts (American actor)|Ian Roberts]], [[Matt Walsh (comedian)|Matt Walsh]] and [[Andrew Daly]] also frequently appeared as sketch actors on the show for several years. [[Triumph the Insult Comic Dog]] (created and voiced by original head writer [[Robert Smigel]]) began as part of a sketch on ''Late Night.'' Celebrities such as [[Joyce Brothers]], [[Nipsey Russell]], [[Abe Vigoda]], [[James Lipton]], [[Bob Saget]] and [[William Preston (actor)|William Preston]] as the character Carl 'Oldy' Olsen also made frequent cameo appearances in comedy sketches on the show at different periods. One of the show's graphic designers, [[Pierre Bernard (comedian)|Pierre Bernard]], was featured in several sketches, such as "Pierre Bernard's Recliner of Rage" and "Nerding It Up For Pierre".

Celebrity guests of the night would also occasionally appear in sketches either during their interviews or during the earlier comedy segments, e.g. in "In the year 2000" (which always included the participation of a celebrity guest after Andy Richter left the show) or a sketch where Conan would pretend to write in his diary while an attractive female guest was there. Quite rare for a talk show, sometimes interviews began normally but turned into sketches with both the guest and Conan participating, usually when the guest was a "friend of the show."