Microsoft has kicked off its long-awaited $300m advertising campaign featuring the unlikely comedy duo of the software giant's geeky founder Bill Gates and deadpan sitcom star Jerry Seinfeld.

The bizarre Bill and Jerry show - which is aimed at boosting the image of Microsoft's Windows Vista system, and hitting back at Apple's popular 'I'm a Mac, I'm a PC' ads

I'm a bit baffled, by it. Why is gates buying shoes.