Sometime after 1997 when Jobs returned to Apple, he gave this motivational speech defining Apple and their "core beliefs". While wearing shorts. While we can't promise he'll be sporting bare legs this Wednesday, this minute-long clip is powerful stuff.
My favorite quote from the video shows the lack of modesty that Jobs manages to deliver so well:
"What we're about isn't making boxes for people to get their jobs done, although we do that well."
But if you're wanting to create a motivational desktop wallpaper featuring his photo and a choice quote, you can't go wrong with this little gem:
"Apple at the core, its core value, is that we believe that people with passion can change the world for the better."