Ryan Seacrest has topped the Hollywood Reporter's fourth annual Reality Power List.
The radio and 'American Idol' presenter, whose company Ryan Seacrest Productions produces a number of reality TV shows including 'Keeping Up With The Kardashians' and 'Jamie Oliver's Food Revolution', takes over the top spot from last year's winner Simon Cowell.
'American Idol' creator Simon Fuller said: "Ryan absolutely has his finger on the pulse because he's talking to America every day through his radio show. He knows what people are thinking about, and as a producer that really gives him a leg up.
"He's the unsung hero of 'American Idol'. Ryan is one person I would not want to lose."
Ryan added: "I work best inundated with things when it's like raining information."
President of alternative entertainment at Fox Broadcasting Company
Mike Darnell, Jennifer Bresnan Executive VP of alternative programming at CBS, Senior VPs for alternative series, specials and late-night at ABC Entertainment John Saade and Vicki Dummer, Nancy Dubuc President at Lifetime and History completed the top five with Simon Cowell taking sixth place.
Hollywood Reporter's Reality Power List Top 10:
1) Ryan Seacrest
2) Mike Darnell
3) Jennifer Bresnan
4) John Saade & Vicki Dummer
5) Nancy Dubuc
6) Simon Cowell
7) Cecile Frot-Coutaz
8) David Goldberg
9) Paul Telegdy
10) SallyAnn Salsano