I don't know what it is but the Washington Wizards always seem to bring out the best and worst of the Cleveland Cavaliers. They inspire them to play hard basketball, but they also verbally get in their heads. On this night the worst team in the Eastern Conference (the Wizards) beat the best team (the Cavs).
These two have met in the first round of the playoffs for the past three years. Even though it is mathematically impossible for that to happen again, the team from Washington played their hearts out and thanks to Gilbert Arenas' return were able to prosper.