I shot some stereograms recently (OK, 6 months ago) on Velvia and only recently got around to developing, scanning and combining them. They look fantastic on a 3D TV of course but if you're capable of going a bit crosseye while maintaining focus, you can see some of them here: Stereograms.
These aren't posted in the gallery because the resolution restrictions are too low. PM me with your email if you have a 3D TV and want a couple of MPO files to try out on it.
Feel free to make this into a "post your stereograms" thread...