Go to this web: http://www.neave.com/strobe/
Set it in full size and enjoy.
Optional: listen a Bob Marley song.
You are done, now look at the walls
Anyway I think the effect is more like when you try to walk after some cups of beer.
I'm pretty sure there was another thread like this but my search failed.
I made those two a few days ago, but anyway I've made this thread just for see another signatures like them
PS: I'm already using first one in AM