After yesterday's HamburgerGate drama from the set of Transformers 2, we know how poorly things can go when an extra's big, swinging ego good intentions override his place in a production's creative food chain. As if on cue, Vanity Fair contributor Bryan Burrough — whose book Public Enemies, about John Dillinger and the founding of the FBI, is being adapted by Michael Mann — chimed in at the magazine's Web site with a dispatch from his own cameo in Mann's film. Not quite surprisingly, we suppose, the spoilerrific Burrough fared a little better with his director than one "Hedgehog" did with Michael Bay: