Steve Jobs and Bill Gates appeared together in an hour long session at "D". Wired Magazine has a video available here. Rather long for most people, but there are some real gems in there.
Jobs repeated his assertion that Apple is a software company, and said that Apple's success with iPod was due to this and the Japanese consumer companies' inability to do software. I was also interested in Jobs's several comments about his past.
When asked about the strengths of the other, Gates praised Jobs' aesthetic sense, and in the context of software design, rather than box design.
Finally, does anyone else think that there is a resemblance between Bill Gates and Stephen Hawking?