A.J. Langer is «Abby» in The Fatigues (Season 8 - Episode 6).

Adam Wylie is The Kid in The Parking Garage (Season 3 Episode 6).

Adelaide Miller is Gennice in The Understudy (Season 6 Episode 23).

Aimee Aro is Faithy in The Suicide (Season 3 Episode 15).

Akane Nelson is Ms. Yoshimura The Checks (Season 8 Episode 7).

Al Fann is The Judge in The Ticket (Season 4 Episode 4).

Al Roker is himself in The Cigar Store Indian (Season 5 - Episode 10).

Al Ruscio is Mr. Vizaki in The Pilot (Season 4 Episodes 23-24).

Al White is Detective Udewitz in The Little Jerry (Season 8 - Episode 11).

Alan Watt is Attendant in The Gum (Season 7 - Episode 10).

Alec Mapa is Paul, the shortest of the towel guys in The Pool Guy (Season 7 - Episode 8).

Alex Craig Mann is the Student #2 in The Burning (Season 9 Episode 16).

Alex Kapp is Maura in The Strongbox (Season 9 Episode 14).

Alexandra Bokyun Chun is Lotus in The Understudy (Season 6 Episode 4).

Alexandra Wentworth is Sheila in The Soup Nazi (Season 7 - Episode 6).

Ali Marsh is Karen Abbott in The Yada Yada (Season 8 - Episode 19).

Alison Armitage is Cheryl in The Jimmy (Season 6 Episodes 18).

Allan Havey is the cop that appears in the final scene of The Wait Out (Season 7 - Episode 23).

Allan Kolman is Cab Driver in The Movie (Season 4 Episode 14).

Allan Wasserman is John Grossbard in The Airport (Season 4 - Episode 12).

Allen Bloomfield is Polar Bear in n The Pez Dispenser (Season 3 Episode 14).

Amanda Peet is Lanette in The Summer of George (Season 8 Episode 22).

Amy Hill is Kim in The Understudy (Season 6 Episode 24).

Ana Gasteyer is Soup Nazi client in The Soup Nazi (Season 7 - Episode 6).

Andrea Bendewald is Celia in The Little Jerry (Season 8 Episode 11).

Andrea Parker is Nurse in The Contest (Season 4 - Episode 11).

Andrea Ragsdale is Crissy, the Dental Assistant in The Yada Yada (Season 8 - Episode 19).