>> kasem was passionate about radio and music. >> hello, welcome to america's top town. >> reporter: his radio show featured little known facts about the recording artist before each song. later in 1978, kasem started his signature long distance dedications that often tugged at the listener's heart strings. >> his whole approach to life was friendly and personable and you got a sense that he cared. >> reporter: he lent his trademark voice to commercial ads and cartoon characters, including the voice of shaggy in scooby do he's been honored not only for his work in entertainment, but also for his charitable causes. in his final days, his achievements were overshadowed by family turmoil. >> he's confused. he's probably very afraid and he's not getting proper medical