I haven't seen an interview with Microsoft founder Bill Gates in a while. Don't miss CNBC's interview with him at Davos, Switzerland today. Maria's the best!

Much about his charitable foundation, but he also has very interesting comments on what's happening in the PC world today. His mind is still very sharp, but he's showing his age (57) and looks to be 15 years older.

And nobody in his family uses Apple products "they never asked..."