McCain very decently defended Obama against an accusation that he was an Arab (not insulting in itself, although incorrect) and, by implication, a terrorist:
This has been mentioned in this thread( http://boards.straightdope.com/sdmb/showthread.php?t=487363 ), but not elsewhere, and I thought it deserved recognition. McCain’s response was decent and praiseworthy, and I’d love to find some way to reinforce this behavior, short of actually voting for the man. I notice that the audience responded positively, too, which is a Good Thing. I don’t think we’ve seen enough of this sort of honesty and civility, and I thought it worth while to point it out. I haven’t breen watching the news this weekend, and I don’t know how much coment this has received.
I note that Obama has thanked McCain: