From the excellent NBA Offseason blog:

Frozen moment:

Maybe it wasn’t exactly “all ball,” but when Pau Gasol finally blocked KG’s drive to the hoop on the left block with three minutes left in the third quarter, it may have been the turning point of the game. It was Boston’s most reliable offensive play, and after the block, Garnett and his teammates seemed unwilling to go back to it. The Celtics stayed ahead for a while longer, but their only reliable offense came from transition the rest of the way.

On the ensuing Los Angeles possession, Rasheed Wallace picked up his fourth foul and missed the next five minutes. If Garnett finishes, or if the refs call the foul there, we may have a different champion right now.