Most people today know Bruce Jenner as the pushover husband of Kris Jenner and stepdad to Kim, Khloe and Kourtney Kardashian ... but did you know that he is also an Olympic gold medalist?

The 62-year-old gained national notoriety at the 1976 Montreal Olympic games, where he placed first in the decathalon -- a series of 10 track and field events. The win launched Bruce into stardom ... and right onto a Wheaties cereal box!

Bruce was joined by gymnastics gold medalist Mary Lou Retton in L.A. on Wednesday, where they revealed three new retro Wheaties boxes  -- one of each of them, and the third featuring boxing legend Muhammad Ali. The 44-year-old gymnast looked cute as ever, and who knew that Bruce was such a stud back in his day (before his numerous face lifts)?

Click "Launch Gallery" below to see Bruce and Mary Lou today, and on their old school Wheaties boxes!

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