In Jez Butterworth's Jerusalem, Johnny "Rooster" Byron has collected a bunch of disaffected teenagers for a booze- and drug-soaked party. He's a braggart, liar and tall-tale teller — on the literal level, a bone-headed loser. But metaphorically, he's a far more significant figure, a manifestation of the Lord of Misrule appointed in ancient times to upend law and custom during winter festivities. It's a huge role, and Augustus Truhn filled it hugely, bringing Rooster to life in all his richness and ambiguity, grandeur and moral turpitude.