One of the characters, who is an actor, is called Hal, as all other character that are actors are references to computers; Hal refers to the HAL 9000 from 2001: A Space Oddyssey. (See also: the trivia section.)
In the scene where Simone conducts a meeting via telephone with her costars for "Eternity Forever", the same speaker is used as in Charlie's Angels, when Charlie communicates with his angels.