Man! I always miss these shows.
Unfortunately, it doesn't appear to be sold on the discovery.com web site, either. It's still on our tivo-like DVR thing, but our VCR is busted, so I can't make a tape of it (and our DVR is almost full, so I can't keep it for long unless I find a bunch of other stuff to delete).
It's probably not popular enough to be a big seller to their "normal" audience, but as someone who spend a lot of time watching sh*thead the squidcam squid, I enjoyed it immensely. It'll probably get re-run at some point; it seemed to be part of a "killer things saturday," since there were "killer bees" on afterwards, and I think "killer ants" was just before...