Yes, most are a combination of celebrities who have been known for one or more of the flaws that many of the movie characters have. Tug Speedman has been called a younger Sylvester Stallone, Vin Diesel, Steven Segal, Jean-Claude Van Damme, Wesley Snipes. Jeff "Fatts" Portnoy is likened mostly to Eddie Murphy but also to Chris Farley, Martin Lawrence, Tim Allen, Tom Arnold, and, to a lesser extent, it's a slight poke at Robert Downey Jr. with the references to the character's repeated drug arrests. Kirk Lazarus is likened to Colin Farrell, Daniel Day-Lewis, Heath Ledger, Russell Crowe, Robert Downey Jr. himself, Christian Bale, and Marlon Brando. With regard to Alpa Chino, take your pick of rapper-turned-actors. He's mainly a combination of Snoop Dogg, Will Smith and Lil' Jon in regards to Snoop Dogg putting his name on everything, Will Smith taking on a major film role to help boost his record/product sales and Lil' Jon having his own energy drink. Finally, Les Grossman has been likened to Hollywood producer Scott Rudin and also to Harvey Weinstein. Also Four Leaf Tayback seems to be inspired in part by authors Dick Marcinko and Tom Clancy.