Now, that sucks. I probably don't have room for a PS2 in my house, since we have everything else (X-box, Gamecube, Atari, N64, etc).
In Mudokon Fortress, you can pick up the Mudokon thats guarding the door to the fortress thats stuck open, and carry him somewhere else. When you let go of him, he'll walk right back to the fortress, and guard it again.
Also, where theres that Slig near the platform that has fuzzles on it, if you stand the right distance away, and say something to it, it will come at you, then get zapped by the zapper right back to where it was standing, and come at you again.
You can also use Munch to lure those Sligs guarding the locked up Mudokons onto the bridge, then have him jump over it again and again, and really tick off the Sligs.