Fabulous recap, and there are a slew of these I've never seen, not to mention a few I never knew existed. Time to see if any of these beauties made it on to laserdisc. :)

Also, slightly off-topic, but I'm curious if you're familiar with Michael Slade's novel Ripper? It's a phenomenal read, and basically Slade's love letter to the great mystery writers of old--mainly to the locked room mysteries of John Dixon Carr, but the second half of the book is an homage to ...And Then There Were None, only far more brutal. It's basically what you'd get if someone decided to shoot Agatha Christie's story as a straight-up horror movie instead of a more staid and approachable mystery. :)