Trivia: Banks and Reuben mention being the few alive on the strip that actually shook Frank Sinatra's hand. Frank Sinatra played Danny Ocean in the original Ocean's 11.
Trivia: Throughout the movie, quotes from The Godfather are said by the actors. For example, Reuben says, "I hear cars pulling in. I hear whispering conversations. Linus crying. Why don't you tell me what everyone else seems to know?" This is almost exactly what Don Corleone is asking Tom Hagan in the Godfather in the scene where he finds out Sonny has been killed. Another quote from the Godfather is when Danny is trying to pull a on Banks, he says, "What I want, [pause] what's most important to me. . ." In the Godfather, Michael says this about his father's safety at the meeting where he kills McCluskey and The Turk.
Trivia: Another link to the Godfather series: Al Pacino and Andy Garcia had previously starred together in The Godfather Part III in 1990.
Trivia: The exchange between Danny and Rusty is basically them taking jabs at each other's real lives - Brad Pitt was married to Angelina Jolie and had a couple kids. George Clooney put on some weight for a role in between the movies.
Answer: Linus was trying very hard in all three movies to prove himself to Danny, Rusty, and his parents. The nose is obviously his innovation, and he wants to show that it's a great disguise entirely of his own creation... even though it's pretty obviously superfluous, as it seems that no one recognizes him anyhow.