I personally think at least a 10 game suspension is warranted, if not the remainder of the season. Not only was it Artest, an intentional blow to someone's head, but also out of the flow of the game - this was right after a score when both sides were running down the floor. My fear is that the league wimps out, and gives him 2-4 games, which would be ridiculous.
Just watched it again a few more times....this guy should be out of the playoffs, no doubt in my mind. That was pure maliciousness.