During the credits, the chauffeur mentioned to Kate they are passing Rodeo Drive, asking if she ever shopped there. This refers to Julia Roberts' role in Pretty Woman (1990), and she says, "I did once. It was a big mistake. Big. Huge." In Pretty Woman (1990), Roberts tells the shop assistants, "big mistake. Big. Huge." In the same tone.
It's been reported that Julia Roberts received a three million dollar paycheck for her role. In fact, she did receive that amount. However, her contract also said she'd receive three percent of the film's gross. The film was a huge success and she wound up with a nearly ten million dollar payday.
When we see Julia Roberts and Bradley Cooper for the first time, the Captain says "...three days of rain." The two starred together in a Broadway play called "Three Days of Rain" in 2006. It received terrible reviews and ran for just seventy performances.
When Edgar (Hector Elizondo) is at the cemetery before the movie starts, on the movie screen is the title of the movie, Hot Spell (1958), and pictured the two main characters. He mentioned that the woman on the screen is his trifecta. When asked if he meant literally the actress on the screen. He said "Yes, literally." The actress on the screen was Shirley MacLaine, who played his wife in this movie.
Ashton Kutcher and Topher Grace starred on That '70s Show (1998) for the first seven seasons, and left either before or during the eighth season. They returned to the finale, and appeared in this movie four years after the series ended.
Since Captain Kate Hazeltine (Julia Roberts) wears the patch of the 101st Airborne of the US Army on both shoulders, the left shoulder signifies that she is presently serving with that unit, and the right shoulder signifies she served with that unit in combat.
DITRADE (Garry Marshall): As he often does in his movies, Garry Marshall cast many of his family members in small roles in this movie: Reed's co-worker Nikki, was played by Marshall's daughter Kathleen Marshall; Mr. Schwabbe was played by his son Scott Marshall; grandchildren Sam Marshall and Lily Marshall-Fricker played "Soccer Son" and Lily, respectively; wife Barbara Marshall played the nurse who told Julia where Harrison was eating dinner; and niece Tracy Reiner played a French photographer. Marshall also shot a scene with his sister, Penny Marshall, in it, but it didn't make the final cut. Also hitting the cutting room floor in that scene, were Los Angeles Mayor Antonio Villaraigosa, and pro-basketball player Dwight Howard.
In the film, Julia Fitzpatrick rants to Dr. Harrison Copeland about being fourteen and "having cystic acne and braces and playing the saxophone in the marching band." Jennifer Garner (Julia Fitzpatrick) played the saxophone in a marching band when she was in school.
At Los Angeles International Airport's baggage claim, Bradley Cooper and Julia Roberts are standing near a couple of chauffeurs who are holding signs that read "Ungar" and "Madison", a reference to Felix Unger and Oscar Madison from The Odd Couple (1970). Garry Marshall was a writer, producer, and director of the show.
The majority of the cast have starred in a Marvel or DC comic movie; Jamie Foxx as Electro in The Amazing Spider-Man 2 (2014); Anne Hathaway as Catwoman in The Dark Knight Rises (2012); Jessica Alba as Invisible Woman in Fantastic Four (2005), and Fantastic 4: Rise of the Silver Surfer (2007); Jessica Biel as Abigail Whistler in Blade: Trinity (2004); Bradley Cooper as Rocket Raccoon in the Marvel Cinematic Universe; Eric Dane as Multiple Man in X-Men: The Last Stand (2006); Jennifer Garner as Elektra Natchios in Daredevil (2003), and Elektra (2005); and Topher Grace as Venom in Spider-Man 3 (2007).
Credits are shown near the end of the crawl for the use of three film posters from romantic comedies: Pillow Talk (1959), Love Actually (2003), and Young Doctors in Love (1982), which, not coincidently, was directed by Garry Marshall. A scene set in front of a movie theater was cut, but evidently not from the final credits.
Kathy Bates originally played Frankie in the play "Frankie and Johnny at the Clair de Lune", which was turned into the film Frankie and Johnny (1991), directed by Garry Marshall. This was filmed before Misery (1990) became a hit, and turned Bates into a well-known actress, so she was not cast in the film version. In this film, she finally worked with Marshall.
Jamie Foxx also recorded a song for the film which is called "Quit Your Job". It appeared in the film, but not on the soundtrack however, because of its vulgar lyrics. "I Gotta Feeling" by The Black Eyed Peas was used for the film's trailer.
In Taylor Swift's first scene, in an elevator talking to Jennifer Garner, you can clearly see the number thirteen written on her right hand. It is her favorite number, as well as she wrote it in her right hand for every show on her "Fearless" and "Speak Now" tours.
James F. McCann: The founder and CEO of 1-800-FLOWERS.COM appeared as a customer in a deleted flower shop scene, when Reed tries to soothe the tense customers by asking them to name their favorite love song.