Posted by T_Man on July 05, 2010 at 13:22:38:
American Top 40 -- the most famous music chart countdown show in radio history -- is celebrating a big anniversary this weekend. AT40 is turning 40. To celebrate the 40th Anniversary of the show, host Ryan Seacrest will pay tribute to Casey Kasem, American Top 40's creator and original host. Seacrest will also be revisiting some of the greatest musical moments over the last four decades and announce the top artist of the last 40 years. Of course, he will also be counting down the week's current Top 40 pop hits.