This boyish, athletic, engaging young TV actor experienced the showbiz equivalent of the Cinderella story when he was plucked from the relative obscurity of TV commercials and made-for-cable movies to travel around the world playing one of the cinema's most famous characters. Cast as the 16-year-old Indiana Jones for George Lucas' lavish initial foray into episodic TV, "The Young Indiana Jones Chronicles", Flanery ran to follow in the fleeting footsteps of Harrison Ford and River Phoenix (the first actor to get a crack at playing the young Indy).Flanery carefully studied Ford's performances as