Today, Shaquille O'Neal celebrates his 40th birthday. Throughout his 19-years in the NBA, O'Neal earned four NBA Championships, three NBA Finals MVP awards, and two NBA scoring titles. The big man was selected as the first overall pick in the 1992 NBA Draft and continued to dominate the league for most of his career. Aside from basketball, Shaq released four rap albums, became an honorary U.S. Deputy Marshall and starred in three movies, including one where he played a genie.

Celebrate the legacy of this illustrious NBA icon with a collection of rare, unseen photos from the Sports Illustrated archives. [SportsIllustrated]