3. Jason Kidd Trade (2008)

The Mavericks hadn't been major players in the trade market for a few years before they pulled off one of the biggest blockbuster deals of the decade, acquiring Jason Kidd in an eight-player deal that sent Devin Harris to New Jersey. The deal cost Cuban, who had adamantly denied rumors of discussions between the Mavs and Nets, about $17 million in additional salary and luxury tax. (Johnny Nunez/WireImage)