From his corner cubicle in Cleveland's locker room, LeBron James kept his eyes riveted on the flat-screen TV. He wanted to see every replay. There was his no-look pass to Wally Szczerbiak. There was his reverse dunk in the final seconds of the first quarter. And then there was his majestic, step-back 3-pointer to beat the halftime horn, a shot he admired before playfully swinging his arms back and...