Microsoft (NASDAQ:MSFT) is launching a new ad campaign featuring founder Bill Gates and comedian Jerry Seinfeld. Will the dynamic duo help Microsoft take a bite out of Apple (NASDAQ:AAPL)? Will Seinfeld's funny business boost business for PC makers like Dell (NASDAQ:DELL) and Hewlett-Packard (NASDAQ:HPQ)? In this installment of "Fool Video," I ask Motley Fool senior analyst Seth Jayson for his take.