One of the points where McCain really shined last night was on Lebanon and his vote against sending marines into Lebanon in 1983. So it's nice to see that he was lying (or, at best, telling a half truth):

McCain seriously misstated his vote concerning the marines in Lebanon. He said that when he went into Congress in 1983, he voted against deploying them in Beirut. The Marines went in Lebanon in 1982, before McCain came to Congress. The vote came up a year into their deployment, when the Marines had already suffered 54 casualties. What McCain voted against was a measure to invoke the War Powers Act and to authorize the deployment of U.S. Marines in Lebanon for an additional 18 months. The measure passed 270-161, with 26 other Republicans (including McCain) and 134 Democrats voting against it.