This is the third time Christopher Guest has played Corky St. Clair having previously played him in Waiting for Guffman (1996) and in the Saturday Night Live Men's Synchronized Swimming short film where the character first appeared.
The restaurant is named Chicharito's for popular professional soccer player and Mexican national team star Javier "Chicharito" Hernandez.
Greg Gammons Jr. (Fred Willard) asks another character if he likes dogs and says they're great. This is a reference to director Christopher Guest's other movie Best in Show (2000), which deals with a dog show competition.