If you’re looking for the Granny slideshow it’s available in near-vga resolution glory for video CD making or whatever. I’m updating the Old Payne Retrospective Gallery and I’d recommend that as a better viewing experience.
Here’s a good and not very good way to randomize filenames in the current directory:
rename 's/[^\.]*/int rand(1729)/e' *
Not very good because there’s some chance (better for small values of 1729 in comparison with ls|wc -l) that it’ll have a filename collision and die. Good because it’s the first thing I thought of.