Wow... This is really interesting...
As <a href="http://www.wonkette.com/politics/john-mccain/maverick-senator-john-mccains-wednesday-anger-list-153562.php">this Wonkette post</a> points out (in typical humorous, over-done Wonkette style), there have been five or six articles in the last couple days about McCain being angry about various things.
What's going on here? He's traded on this image as mature, level-headed, and above the fray. Is he trying to butch up his image for a run in 2008?