Many of you may never have heard of Casey Kasem but to those of us in the radio and entertainment business he is a big deal. Before a man by the name of Ryan Seacrest, we had Casey Kasem American Top 40
Nowadays, turning on your radio and hearing a countdown is normal. It was made normal by a man named Casey Kasem. He has done some form of American Top 40, American Top 20 and American Top 10 dating back to 1970. He voiced many commercials and was the voice of Shaggy from Scooby Doo.