NEED TO KNOW Will Arnett once auditioned for Kevin Costner's 1997 movie The Postman just after experiencing some form of food poisoning"I was meeting Kevin Costner and I legitimately was worried about crapping my pants," Arnett recalledCostner costarred with Will Patton, Olivia Williams and Tom Petty in The PostmanWill Arnett's audition for a Kevin Costner movie came at a most inopportune moment. "Remember Kevin Costner did that movie, I think it was called The Postman? I was meeting Kevin Costner and I legitimately was worried about crapping my pants.”Kevin Costner in 1997's The Postman. Warner Bros.Costner starred in and directed the 1997 movie, which takes place in a post-apocalyptic world. In the movie, Costner portrays a man who becomes known as The Postman, who helps bring people across the former United States back together.