LeBron James made the Dallas Mavericks look foolish in the first quarter of Game 2 on Thursday night. Heat guard Mike Bibby shot a wide open 3-pointer, but the ball bounced off the rim and went up for grabs. James attacked the basket, caught the ball in mid-air and threw down an electrifying put-back dunk. The two-time MVP sent the home crowd into a frenzy, but the Mavericks got the last laugh after pulling off one of the most amazing comebacks in NBA Finals history. Scroll down to watch the dunk.