Okay, so that's all the episodes. That floating eyeball in the intro is looking pretty much right at the floating math, which makes it feel like a creator prank...
Anyways, all the episodes that don't skip the intro sequence say the same thing, which means it was probably changed unless those four or so episodes with it missing originally had the intro sequence along with the alternate visuals, but then why would those stick out in our memories instead of what it appears to be changed to if most of the episodes always displayed this visual that no one who has reported so far remembers?
Need those 1st edition dvds to do any further significant testing...