Sgt. Cathy
Katherine LaNasa plays Sgt. Cathy, a cop who Jerry goes out with on “The Beard” episode. Everything is going fine until she wants to know if he watches “Melrose Place.” He’s already dished it to Elaine, saying he lied about not watching it in the past. Sgt. Cathy is on to him.
He continues to deny watching the show to her as she backs him into a corner. Hilariously, she forces him to go down to the station to take a lie detector test. LaNasa is a former ballet dancer and choreographer and has appeared on many TV shows.
Linette
Seinfeld was a minor gig for Amanda Peet. At twenty-five, and drop-dead gorgeous, she portrayed Linette, another of Jerry’s failed dates. Now, she’s a successful actress with a net worth of $60 million and married to screenwriter and television producer David Benioff ("Game of Thrones").
Peet appears in “The Summer of George” episode, the one with the famous “dude” quip bit exchange between George and Jerry. Recently, she opened up about what the part meant to her with YouTuber Jon Interviews saying, “I’m really proud of that, I feel like it’s a feather in my cap, to say the least.”
Beth
You probably know Debra Messing from the hit TV series "Will and Grace," which earned her five Emmy nominations. But you might not know she got her start on "Seinfeld." Messing shows up playing Beth on two episodes, “The Wait Out” and the immortal classic “The Yada Yada Yada.”
She’s one of the few date characters who landed more than one episode. In the second season, Beth dates Jerry while Elaine dates her ex-husband. It gets awkward when George feels responsible for the breakup of the couple’s marriage and tries to get his friends’ dates back together.
Sheila
Alexandra Wentworth is best known for "In Living Color" and other comedic performances. Notably, she’s married to ABC anchor George Stephanopoulos. She appeared on what is arguably the best Seinfeld episode ever, “The Soup Nazi.” Sheila, as Jerry’s girlfriend, is thrown a huge blow when she stands up to the terrifying soup peddler, only to have Jerry abandon her for continued access to the coveted soup kitchen.
Kissing is forbidden in the Soup Nazi’s line. He runs a zero-tolerance establishment. When Elaine tries to sweet-talk him with compliments, he screams, “Nothing for you! Come back, one year!”
Jeannie
Janeane Garofalo joined Seinfeld as Jerry’s girlfriend (and fiancé!) until Jerry realizes she’s exactly like himself. Everything seemed so perfect. Jeannie says, “We’ve got tremendous kiss compatibility.” Jerry concurs, “It’s all about meshing.” She says, “I talk to you; it’s like I’m talking to myself.”
Then Jerry realizes he hates himself. We know her best on "SNL." She’s been a vocal anti-war activist along with other prominent artists. Most recently, she’s in "The God Committee" with Kelsey Grammer and Julia Stiles.