I'm sure he's got video people on staff, so probably very little marginal cost. Look back at some older posts, there are a lot of videos. Here's one from last w

I'm sure he's got video people on staff, so probably very little marginal cost. Look back at some older posts, there are a lot of videos. Here's one from last week about his dad's 90th birthday: http://www.gatesnotes.com/About-Bill-Gates/Happy-Birthday-Dad http://www.gatesnotes.com/About-Bill-Gates/Happy-Birthday-Da...