The Second Coming of Nils Lofgren

IT'S A COMMON complaint among watchers of American late-night television. Everything is going along as normal, all the right cliches are being spoken, when you lose concentration and blink for a moment and everything is upside-down; John Wayne isn't shooting the bad guys any more, he's doing a commercial for some U.S. Savings Bank. They're called ad-flashes by those who have been watching since the '60s.