Great examples, all!

Melanie, I dig those sparkles, too. They are also well-done when used around the little "truth god" in "Speak the Truth". It's a shame that the animation wasn't used more frequently.

SamSarah, right on for the "explosive" entrances and exits. The colored smoke and lights, the sound effects -- truly magical even when viewed today.

Maurine and JP, gotta love the facial spots and stripes effects! I agree, those spots must have been painstaking to film to produce those few seconds of magic. Darrin's ears "blooming" -- excellent makeup made doubly hysterical by the reactions of Dick York (and those around him)! And it's magical when "Macbeth" drives through the wall, or anyone walks through one. I especially marvel when Aunt Clara doesn't make it through, because Marion Lorne did such a marvelous job of NOT telegraphing the collision -- I still half-expect her to make it through when I watch it!

Thanks for chiming in, folks! In this age of CGI, it's interesting to know which of the "old school" effects remain dear to us.