For the record, note that Joe Biden stated at least two big falsehoods in Thursday night's VP debate. In the first one, he claimed that Barack Obama has not said he would meet with Iran without preconditions. But Obama said exactly that. In the second one, Biden claimed at the debate that he had opposed the Bush administration's pushing of elections in the Middle East. But that too isn't true--in 2005, he expressed great favor for the idea.
You can see evidence for this here...
And also here.