Although I just saw Samardzija pitch on Saturday at Safeco, I can't put him in the same category as Bo Jackson. Deion played longer but Bo had an impact on both the NFL and MLB. Deion's impact on baseball was minimal. It's really a shame Bo did not dedicate himself to baseball. He would have been a Hall of Famer (once he cut down on the strikeouts).
Honorable mention to Bob Hayes and Dave Winfield. Winfield was a guy who did not get the props he deserved during his playing career from either George or the fans. I'm guilty of it myself. I can't even count how many times he got booed at Yankee Stadium. It seemed every time Bob Shepard announced his name the crowd was 50-50 between cheering and boos.