"The most uncomfortable thing about this movie was having to get a spray tan every week. I would do it on the balcony of my hotel room, which was on the 17th floor. You think you're free of the cameras and paparazzi, and there I am getting photographed in my underwear getting a spray tan. Not a good look for me." Actor Mark Wahlberg on the embarrassing side of preparing for his new movie Pain & Gain.