Someone telling a story about hiring a fitness trainer to look like Brad Pitt in Fight Club

I believe it was an interview where a guy tells a story about trying to get fit for a movie role so he hires a popular Hollywood fitness trainer. The guy tries to tell the trainer who he wants to look like but the trainer cuts him off and says "Don't tell me, I already know. Brad Pitt, Fight Club." The guys asks how did he know and the trainer says "That's what everyone asks for."