Kiss on Letterman. Anvil on Conan. Quite a night for headbanging. We’ve got a strong Anvil bias, of course, and the moment when he snarls “HEAVY METAL! FIGHT!” and then flashes the goofiest grin I’ve ever seen on television is really very sweet. But watch the Kiss thing too, if only for the fantastic visual joke of Dave walking out at the end, into the pluming smoke, to shake hands with the boys. He looks delighted.