One of the things with the special effects on this show is that a lot of them were done in camera, whether it was just by using a piece of plastic for the Kryptonite that either by shining a light at it made it glow and then the different lenses used on the camera provided the "blur" that made you think that the Kryptonite was actually reaching out to touch Superman. But, even the episode with the Yellow Peri and the ventriloquist dummy, sure, nowadays the dummy would've been done entirely in CGI, but even the rough animation of the dummy added a sense of realism to the show that CGI never could've.