Trivia: In Plain Sight
- Actor Allusion
- A retroactive example - when Bobby D is Put on a Bus in season 3, it's explained that he's on a task force in Chicago. Todd Williams subsequently took a role on The Chicago Code.
- Inverted: In 2x03, "A Stand-Up Triple," the very non-maternal Mary asks Stan and Marshall to shoot her in the head if she ever has three kids. Two years later, the actress was pregnant with her third child.
- The Danza: Mary Shannon, played by Mary McCormack. Incidentally, the alias the character uses is "Mary Shepherd".
- And in season 3, Allison Janney plays new WitSec director Allison Pearson, and Raph's aunt Rita Molena is played by Rita Moreno.
- Hey, It's That Guy!: Stan is played by Chris Rock's maybe-racist teacher. Mary and Marshall themselves have had several secondary roles in various series and films.