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Apolo Anton Ohno - this Olympic gold medal-winning speed skater won season 4 in 2007. Ohno is a three-time Olympian and a 12-time U.S. National Champion.
He will return for the 15th season of the reality dancing competitions, 'Dancing With The Stars: All-Stars,' which is slated to premiere on Monday, September 24 at 8 p.m. ET/PT on ABC.
(Pictured: Apolo Anton Ohno appears in a still from the 2007 season 4 of 'Dancing With The Stars.')
(ABC Photo/ CAROL KAELSON)