On "Seinfeld", what two celebrities does George talk to backstage at the Tonight Show?

On “Seinfeld,” George talks backstage at the Tonight Show with Corbin Bernsen and George Wendt.

This happens in “The Trip: Part 1,” the Season 4 premiere, which originally aired in 1992. Jerry travels to Los Angeles after being invited to appear on “The Tonight Show with Jay Leno,” and George goes along to help search for Kramer, who has moved to California and appeared on television.

While Jerry prepares for his appearance, George encounters Bernsen and Wendt, who play themselves as fellow guests. George treats the brief meetings as serious, insightful conversations and even offers his opinions about their television work. The joke is that George believes he has made an impression, while the actors regard him as an intrusive stranger. Their later comments on the show make his self-important interpretation even funnier.

A common mix-up is assuming George spoke with fictional characters from “L.A. Law” or “Cheers.” Bernsen was known for playing lawyer Arnie Becker on “L.A. Law,” while Wendt was famous as Norm Peterson on “Cheers,” but both appeared here as themselves. Jay Leno also appears as the host, though he is not one of the two celebrities asked for in the question.