5. Ripping The River Walk (2006)

On a radio show during the 2006 Western Conference semifinals, Cuban stoked the flames of the Interstate 35 rivalry by referring to San Antonio's prized tourist attraction as the "ugly-ass, muddy-watered thing they call a River Walk." This came after he called Spurs fans the "rudest" in the NBA on his blog. (Tim Heitman/NBAE via Getty Images)