In a time of white wicker, macrame, and ferns...when the pointed collars of polyester shirts brushed the tops of short-sleeved sweaters that bloused gracefully over flat fronted jeans with bottoms like bells...and the most popular Halloween costume included fluffy felt skirts with a black poodle applique and bobby sox... Sunday nights were devoted to the Nancy Drew and Hardy Boys Mystery Hour -- our one television program we got each day -- but Saturday mornings, those were reserved for Casey Kasem. His smooth, familiar voice announced the country's most popular songs each week, and I listened patiently through the countdown, measuring my favorites against what my fellow countrymen preferred. I adored the inside scoop about the rock stars, such as the story about the guitarist from Jefferson Starship who loved to skateboard. I thought of my own blue board, and felt a kinship. I also felt a kinship to listeners around the nation, as Casey sang out their radio station's call numb