Honestly, I don't see many/any that are truly great... Just a looping gif, or a single image and music looping in the background...
Perhaps I'm dense, but what's the point?
I'm likely missing something... I've only found a very very select few funny. :/
There typically isn't much of a point to them, really. I don't know about other people, but it's usually the juxtapositioning of the images and sounds, as well as the often bizzare combinations of ideas that does it for me. There's a lot of WTF-humor in wondering exactly how people came up with most of my favorite fads (and most YTMND's in general), like the Future Conan line. Every time I look and see how that fad started and then progressed, I can't help but laugh at how absurd the concept is and wonder how people manage to think up things like it.
