Chapter 5b: On the verge of blowing yet another playoff series, this time after building a 3-1 lead against San Antonio, the Mavs dig down deep in a classic Game 7. Was 2006 a wildly underrated NBA season? Has Dirk Nowitzki ever been better? Could that Spurs team have won five straight titles? Is Mark Cuban the first and only owner-chemist? And what the hell was Manu Ginobili doing? Bill breaks it all down with Marc Stein from The New York Times.