LL Cool J admitted on LL Cool J/Joe Pantoliano/Neil Finn (2003) that the film "sucked" but that it was his duty to promote the film.
John McTiernan recycled the players, disguising their faces with elaborate costumes and helmets for each away game. With each new game they improved and worked better as teams.
Rebecca Romijn only accepted her part in the film once they agreed to remove a nude scene and provide her with a deep facial scar.
Rollerball is referred to as "sports entertainment" - the current euphemism for professional wrestling.
Slipknot: The band playing during one of the games. One of their performances was recorded and digitally added to the movie.
Carroll Shelby: his very rare Shelby American Series One is the first car Chris Klein's character is given in the movie, and its replacement is an extremely rare vintage Shelby Cobra Daytona Coupe.