A dark-haired, puppy-eyed TV and screen actor whose career had been somewhat overshadowed by that of his older brother James, David Naughton trained as a dancer at the London Academy of Music and Dramatic Art before returning to the US in the mid-1970s. Settling in NYC, he appeared onstage in several shows, including "The Fantasticks" and a supporting part in "Hamlet" for The New York Shakespeare Festival. Fame came in the late '70s, when Naughton was chosen to star in a series of Dr. Pepper TV commercials, singing and dancing the soon-ubiquitous "I'm a Pepper, you're a Pepper" theme.These