Ben Reed is Male Nurse in The Outing (Season 4 Episode 17).

Ben Stein is a Shellbach in The Comeback (Season 8 Episode 13).

Benjamin Lum is The Chinese Mailman in The Cigar Store Indian (Season 5 Episode 10).

Bernie Williams is Himself in The Abstinence (Season 8 Episode 9).

Berta Waagfjord is Bridgette in The Diplomat's Club (Season 6 - Episode 21).

Better Midler is Herself in The Understudy (Season 6 Episode 4).

Biff Yeager is Mr. Heyman in The Library (Season 3 - Episode 5).

Bill Applebaum is D'Giff in The Pez Dispenser (Season 3 Episode 14).

Bill Erwin is Sidney Fields in The Old Man (Season 4 - Episode 18).

Bill Gratton is Postal Official in The Package (Season 8 Episode 5).

Bill Lee Brown is Partygoer in The Betrayal (Season 9 Episode 8).

Bill Macy is Herb in The Cadillac (Season 7 Episodes 14-15) and in The Shower Head (Season 7 Episode 16).

Bill Saluga is Usher in The Opera (Season 4 Episode 9).

Billye Ree Wallace is Nana in three episodes. The first, The Pledge Drive (Season 6 Episode 3).

Blaire Baron is Female Executive in The Pick (Season 4 Episode 13).

Blake Gibbons is the Lyle in The Summer of George (Season 8 Episode 22).

Bob Balaban is Russell Dalrymple in 5 episodes. First: The Pitch (Season 4 Episode 3).

Bob Odenkirk is Ben, Elaine's boyfriend in The Abstinence (Season 8 Episode 9).

Brad Garrett is Tony Abado in The Bottle Deposit (Season 7 Episodes 21-22).

Bradford English is Cop in The Robbery (Season 1 Episode 3).

Brenda Strong is Sue Ellen Mischke in four episodes. Her first appearance was in The Caddy (Season 7 Episode 12).

Brent Hinkley is Lou in The Merv Griffin Show (Season 9 - Episode 6).

Bret Anthony is Ball Boy in The Lip Reader (Season 5 - Episode 6).

Brian Blondell is Dog Guy in The Andrea Doria (Season 8 Episode 10).

Brian Callaway is Passenger in The Butter Shave (Season 9 Episode 1).

Brian Doyle-Murray is Mel Sanger in The Bubble Boy (Season 4 Episode 7).

Brian George is Babu Bhatt in The Cafe (Season 3 - Episode 7).