I think that Obama should start every stump speech from now on by asking for a show of hands: "How many of you know how many houses you have". It think it would really drive home how out-of-touch McCain is. 
More importantly, it would make a far better emotional statement  about "trickle-down" economics than would any long-winded discussion about the merits of conservative vs. progressive economic policies.

The one thing that is bothering me right now is not Wright or Hillary or McCain, but the reports that Obama is tired. What's he fighting? Lack of sleep? A cold? If it's not these, he should be invigorated right now. This is as good as it gets, politically. With all of this visibility, he should be making political hay. What's he waiting for?