Franklin is competing again in 2016.
Competing again at the 2016 Summer Olympics, Phelps played himself in one 2008 episode ofEntourage.
Apolo Ohno
Apolo Ohno became a household name thanks to the 2002 Salt Lake City Winter Olympics.
The CW
Shawn Johnson
Gymnast Shawn Johnson competed in the 2008 Summer Olympics and took home gold.
Eric McCandless/Freeform
HBO
CBS
Ali Goldstein/NBC/NBCU Photo Bank
Randy Holmes/ABC Family via Getty Images
David Giesbrecht
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Annette Brown/Lifetime Television/Courtesy Everett Collection
Keystone-France/Gamma-Keystone via Getty Images
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