An 60s documentary called 'Bullitt: Steve McQueen's Commitment to Reality
From the disc's main menu, go to the 'Special Features' section, where you will actually find an 60s documentary called 'Bullitt: Steve McQueen's Commitment to Reality.' As we said, this is not necessarily a hidden feature, but an unadvertised supplement to the disc that is easily overlooked.
All easter eggs were generously submitted by Bjorn_K