Two-way sports icon Bo Jackson turns 45 years old today. The 1985 Heisman Trophy winner from Auburn University made a name in both baseball and football in the 80s. He was the first athlete to play in all-star games for two sports.

But it might be his commercials for which he's best remembered by casual 80s fans. His "Bo Knows" campaign for Nike in 1989 featured Jackson prevailing in golf, tennis, car racing, even luge with each sports star saying "Bo knows ...."

All except two notable names. Wayne Gretzky simply shakes his head and says "no" after Bo is featured on ice skates. (Actually, the commercial was filmed on a wooden floor, with Bo wearing socks. And Gretzky's simplified answer came after the commercial's director rejected The Great One's take on "Bo knows hockey.")

And blues master Bo Diddley gets the other laugh with "Bo don't know Diddley" after Jackson failed to master the guitar.

A hip replacement ended Jackson's sports career in the mid '90s, but he took the early retirement as a chance to return to Auburn and finish his college degree.

"God has his way of opening up our eyes to see reality," Jackson told ESPN during a SportsCentury profile. "The way He opened my eyes is to allow me to have this hip injury. That is a rough way to go, but I had to accept the fact."