Who: Todd Barry
Season appeared: 1
Episode: 107 ("The Monogamists")
Character's name: "Ordinary Guy"
Memorable moment: Barry's working man espouses his views on staying faithful: "I've been involved in a monogamous relationship for over a year now, and it's been wonderfully fulfilling. Of course my definition of monogamy includes sex with prostitutes ..."
Who: Margaret Cho
Season appeared: 4
Episode: 50 ("The Real Me")
Character's name: Lynn Cameron
Memorable moment: "Miss Motherf--ker, why have you not returned my last 200 phone calls?" the fashion-show maven shouts at Carrie over her cell phone. "I'm sure Dolce & Gabbana can find someone else to dress ..." "Dolce & Gabbana picked me? "Yes, f--kette, and those are some picky Italians."
Who: Jim Gaffigan
Season appeared: 4
Episode: 51 ("Defining Moments")
Character's name: Doug
Memorable moment: The New Yorker cartoonist waves nonchalantly at Miranda while enjoying "an open-door dump."
Who: Craig Gass
Season appeared: 5
Episode: 70 ("Cover Girl")
Character's name: Tom "Big Boned"
Memorable moment: In a role he allegedly put on 80 pounds to play, Gass' Tom goes orgasmic over a Krispy Kreme donut.
Who: Judy Gold
Season appeared: 5
Episode: 70 ("Cover Girl")
Character's name: Barnes and Noble clerk
Memorable moment: In one fell swoop, she approves one of Miranda's book choices, discourages another ("Is The New York Times going to come to your apartment at 2 a.m. and pry the cookie dough out of your hands? I don't think so"), and sends a shout-out to Weight Watchers.
Who: Michael Showalter
Season appeared: 6
Episode: 81 ("The Post-It Always Sticks Twice")
Character's name: Jack Berger's friend Billy
Billy is scolded into slack-jawed silence as Carrie concludes her Berger-breakup tirade: "So my point, Billy, is this: There is a good way to break up with someone, and it doesn't! Involve! A Post-It!"
Who: Bryan Callen
Season appeared: 6
Episode: 82 ("The Catch")
Character's name: Howie Halberstein
Memorable moment: Jilted by Carrie, Howie "Jackrabbit" Halberstein chokes, "Wow, If I'd known you were just using me, I wouldn't have made love to you like that!"