Reactions to Pens/Caps roughing and no hand-shake?

I am a Caps fan, but I do respect the Pittsburgh Penguins, and I don't "hate" them. But tonight, I did feel like they were being sore losers. I mean, I don't think that Crosby (don't mean to hate on him) should have slashed whoever he slashed (sorry, don't know who it was) when there was only 2 seconds left. The Capitals were ready to celebrate their victory, and there had to be a fight. It wasn't a very sportsmanlike thing to do, and I think I would have enjoyed the game more if the Pens would have left it alone.