- Billing Displacement: Debi Mazar as Shauna in Season 3 - After her Promotion to Opening Titles in Season 2, Mazar was heavily pregnant by the time Season 3 began shooting & subsequently only appeared in a few early episodes that season, before dissapearing from the show for the remainder of the season & being Demoted to Extra with the start of Season 4.
- Career Resurrection: Kevin Connolly had actually retired from acting when show creators first approached about doing the show. It wasn't until he was informed the part of Eric had been written specifically for him that he decided to take part.
- Cowboy BeBop at His Computer: The entirely fictional Vincent Chase has shown up a lot more in the press than a fictional character should. We'll say it here just for emphasis - there is no Vincent Chase, and there is no Aquaman movie starring him.
- Inspiration for the Work: According to Mark Wahlberg, the series was initially conceived when his assistant asked if he could film Wahlberg and his friends, calling them "hilarious." Other reports credit Eric Weinstein, a long-time friend of Wahlberg, with the idea of filming the actor's group of friends. However, according to Donnie Carroll, who was the inspiration for the Turtle character, the idea for a show involving an actor and his friends had come from him. It had originated as a book idea, centered on Carroll's own life and his experiences with Wahlberg, titled From the 'Hood to Hollywood, A Soldier's Story.
- Life Imitates Art: A film adaptation of Aquaman being a huge box-office hit, who would've thunk it?
- Real-Life Relative: Jonah, who is Ari Gold's son in the series, is played by director Doug Ellin's son.
- Schedule Slip: The second half of Season 3 was continually pushed back, eventually airing in April 2007, 8 months after the first half of the season had ended. It was so delayed that Season 4 started just two weeks after the finale.
- Unintentional Period Piece: "I Love You Too" shows just how different Hollywood and pop culture were in the 2000s. Vince and the gang attend the San Diego Comic Con so Vince can promote Aquaman and Drama can do a panel for Viking Quest. The episode clearly takes place during a time when comic books and sci-fi were still seen as niche genres by Hollywood and Vince's crew was reluctant to go because the event was strictly for geeks. Nowadays, the genres are the biggest money makers and Comic Con, which has expanded to includes all kinds of pop culture, is one of the film industry's biggest yearly events.
- What Could Have Been: Mark Wahlberg's and Tom Brady's roles in "Fore" were originally written for Creator/Elil and Peyton Manning.
- Write What You Know: The series was loosely based on Mark Wahlberg's days as a struggling actor.
- Write Who You Know: The main cast were based on Mark Wahlberg's associates:
- Eric Murphy was based on his manager Stephen Levinson.
- Johnny Chase was based on his cousin Johnny "Drama" Alves, whom Donnie Wahlberg had hired to keep his younger brother out of trouble.
- Salvatore Assante was based on his former "gofer" Donnie Carroll aka "Donkey".
- Ari Gold was based on his real-life agent Ari Emanuel.
Trivia / Entourage