I'm broadly pro-yelling at politicians, so it's hard for me to get worked up over the Joe Wilson thing. Actually, I think politicians should probably be yelled at and yell at each other more, not less. I would prefer some genuine passion over principle to the microscopic oscillations between the Democratic and Republican wings of the American Party.
I also find it telling that the Republicans (or at least an awful lot of them) are worked up into apoplectic rage over what really amounts to some rather mundane domestic policy questions, while the Democrats (except Dennis Kucinich and a few other people no one takes seriously) just a few short years ago could not muster a fraction of that outrage over starting a god damn war on false pretenses.
I've sat on this a couple of weeks, but it seems appropriate in context: the only thing that puzzled me more than the general lovefest over Ted Kennedy was the visceral hatred he seemed to have inspired in so many of his political opponents. (It should be said that I find lovefests over politicians just icky generally.) By all means: disrespect the memory of a the late senator from Massachusetts, if you are so inclined, but don't do it because you think he represented some particularly virulent form of crypto-socialist-whatever, or because of your utterly manufactured outrage over the senseless death of a woman whose name you would not remember if she had been riding in the car with a less prominent politician.
Do it because disrespecting our rulers is our sacred right and (occasionally solemn duty) as Americans.
We are mostly ruled by liars and thieves. This is the normal human condition. There's nothing wrong with behaving accordingly.