I'm originally from Minnesota, so I'm following the manual recount of the Senate election between Al Franken and Norm Coleman. If there's any doubt about the voter's intention a ballot may be challenged and put aside for later judging.
Minnesota Public Radio has put up a gallery of challenged ballots that will be completely unsurprising to anyone who has ever tried to teach their grandmother or pot-head nephew how to use a computer.
As an aside, Al Franken turned out to be a much weaker candidate than anyone thought. In a Democratic state like Minnesota, in an anti-republican year like this, against a completely unimpressive incumbent like Norm Coleman, he should have put this thing away easily.