Ryan Seacrest is a radio personality and television host.
American Idol is an American singing competition television series created by Simon Fuller , produced by FremantleMedia North America and 19 Entertainment , and distributed by FremantleMedia North America . On Air with Ryan Seacrest is an American syndicated radio program hosted by Ryan Seacrest . Ryan Seacrest . He is best known for hosting the talent competition show American Idol , as well as the syndicated countdown program American Top 40 and the KIIS-FM morning radio show On Air with Ryan Seacrest .