In my computer applications class at school (required course over the extreme basics of Word, Excel, etc- boring as hell) I'd take screenshots of the desktop with all the different menus open, and then made a virtual desktop in Powerpoint. I had it to where you could click the Start button, highlight all the options as you went up with the appropriate windows opening up and so on down the line, even to the point where when you clicked on a program it would open it up.
For a project in that same class we had to make a Powerpoint presentation with a winter theme. Everyone was doing your generic run of the mill Powerpoint presentation, so I made a 7 second or cartoon of a dog catcher chasing a dog through some snowy woods, with a cloud moving across the top sprinkling more snow on them (I even had a tiny Santa pop out of the cloud about halfway through and fly off). The presentation ran at about 10 frames per second and was over 70 slides long. I was afraid my teacher wouldn't like it, but luckily she loved it.