“What is this for?” David Hasselhoff asks me. “Is this for SPIN magazine or an Austrian magazine, or a German magazine or what?” David Hasselhoff wants to know why I’m here. It’s a valid question, really. Why are any of us still delighting in the adventures of his sixty-year career? It’s not a roller-coaster ride, not in the least. On a roller coaster, you can see where the ride is taking you, no matter how frightening or potentially disastrous, the ride itself exhilarating and in the end, you’re thrilled it’s over. Hasselhoff’s career is a turbo-charged Tilt-a-Whirl, sometimes under water, and sometimes, catapulting its onlookers into outer space. You crane your neck to see what’s on the horizon. That’s the thrill of it. And that’s why he’s still working, surviving — no, prevailing in — t...