Anthony Mackie revealed on “The Pivot Podcast” Tuesday that his life story was used by Eminem as inspiration for their infamous rap battle at the end of “8 Mile.” “We’re on set one day, and he’s like, ‘Yo, It doesn’t make sense that we’re beefing,'” Mackie, 46, recalled. “I was like, ‘Right.’ He was like, ‘I need something on you.'”