I cannot find the interview James Neal gave after the game, but he certainly implied that he did not make any attempt to not hit Bard Marchand in the head with his knee. Neal knew exactly what he was doing when he skated by Marchand.
As for the Orpik-Thornton incident, if the league really wanted to stamp this stuff out, this would be the perfect time to make a huge statement. I would suspend Thornton for 30 games, but only after Orpik comes back from his inury. Thornton should have to sit out the time frame that Orpik is out for, then start his penalty. As well, Boston should not be able to fill Thornton's spot on the roster while Orpik is out. Basically, the Bruins will be short one player on their roster until Orpik comes back.
James Neal should get 15-20 games for that knee, but i think the NHL gives him maybe only 3-5 games.
The hit Orpik put on Eriksson, it is borderline clean/dirty. Orpik does not leave his feet, and it looks like he hits Eriksson's shoulder, more than he does his head. But, as Captain Fantastic put it perfectly though, Orpik's prior history, and the fact that he hit a player in a defenseless position, make it look pretty bad. I do not think Orpik should get any games for the hit, but a fine would not be out of order.
I understand the game is fast and tough, but there is no need for the dirty crap, and the NHL should pull it's head out if it's ass on this one, and send a clear message to all teams and it's players.