This is worth watching if you have an hour to kill. Not only is the first 30 minutes relevant to HN, but the second 30 minutes about foundation stuff is pretty inspirational. In 20-30 years there will be countless people living full lives who would be dead if it weren't for BG. Pretty amazing guy.
As much as I hate to agree with Gates on anything, I too think it is a shame that neither the governments nor the markets have found it worthwhile to eliminate preventable causes of suffering such as Malaria. As much as I hate the Windows tax, it is a little consoling to think that some of it is being put to good use.