Happy birthday, Chuck: How well do you know Charles Barkley?

Eleven-time NBA All-Star and current "Inside the NBA" analyst, the legendary Charles Barkley turns 55 years young today.

When Barkley retired in 2000, he was only the fourth player in NBA history to achieve 20,000 points, 10,000 rebounds, and 4,000 assists - the definition of versatile.

In recognition of his truly special talent, we wanted to see how much you know about the man they call Sir Charles: