When Seth Green is in the plane drinking coffee, you see him wince a little - not because the coffee is hot - but because Vin Diesel had put his cigarette out in the coffee, prior to the filming of that scene.
Tom Noonan improvised the "why are you in such a rush?" line. So Seth Green's reaction and delivery of his line are authentic.
Although production wrapped in late 1999, the movie sat on the shelf for two years, before it was finally released.
Knockaround Guys is an actual Mafia term that refers to a member who has very little ambition or someone who lacks success.
In 1997, at the company's annual convention held at the MGM Grand in Las Vegas, video rental chain Hollywood Video had a contest for their store managers to win a stand-in part in this movie. Randomly chosen managers had to improv a scene, a job interview, with actor Sam McMurray. The winning manager is in the bar fight scene.