Kramer's wacky entrances that seemed improvised were carefully planned and rehearsed. Johnny Cochran loved Jackie Chiles the first time he saw the character, but would eventually send a cease and desist letter. George Steinbrenner made a guest appearance as himself, only for his scenes to be cut. There's a lot you don't know about the show about nothing.
| Name | Type | Role | |
|---|---|---|---|
| Tom O'Neil | Guest Star | ||
| Jerry Seinfeld | Guest Star | ||
| Phil Morris | Guest Star | ||
| Andrew Wallenstein | Guest Star | ||
| David Steinberg | Guest Star | ||
| Larry David | Guest Star | ||
| Richard Fancy | Guest Star | ||
| Lawrence A. Mandley | Guest Star | ||
| Heidi Swedberg | Guest Star | ||
| Len Lesser | Guest Star | ||
| Joel Keller | Guest Star |