Join or Sign In
Sign in to customize your TV listings
By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.
American Idol host Ryan Seacrest is officially the busiest guy in showbiz. Seacrest — whose daytime talk show launches next month — will replace radio icon Casey Kasem as host of American Top 40 beginning Jan. 10. Kasem, meanwhile, isn't going into retirement just yet. He'll continue hosting American Top 20 for adult contemporary stations around the country.