A while ago, following the premiere of The Enchanted Island at the Met, I screwed my tongue into my cheek and named the top 10 roles Plácido Domingo should take on next for WQXR’s Operavore. Predictably, he’s singing Germont next year at the Met. Unpredictably, he made an appearance on last night’s Colbert Report, perhaps signaling his eighth career as a faux-pundit?