When Nathan suggests to Sheldon that they file the comic books according to the artist's name, Sheldon exclaims "'Nuff said!". This was a catchphrase of Stan Lee's during Marvel Comics heyday, and became a type of code word among Marvel fans for mutual agreement.
Will Sasso plays Mandy's father, Jim McAllister. Along with Billy Gardell, who plays Herschel Sparks, he began his career in stage comedy.