Peyton Manning, Archie Manning and New York Giants quarterback Eli Manning attends the NERF Father's Day Football Throwdown on June 14, 2008 at Chelsea Piers in New York City. (Photo by Astrid Stawiarz/Getty Images)
Brett Hull, Bobby Hull
Ken Griffey Sr., Ken Griffey Jr.
Dale Earnhardt Jr., Dale Earnhardt Sr.
Brent Barry, Rick Barry
Laila Ali, Muhammad Ali
Boxer Laila Ali poses with her father, former heavyweight champion Muhammad Ali, after she defeated Suzy Taylor in two rounds at the Aladdin Casino in Las Vegas, Nevada, August 17, 2002 (Photo By Scott Halleran/Getty Images)