- Title: Futurama – Parasites Regained
- wiki: link
After Nibbler (Frank Welker) falls ill to the parasites living in his sandbox, slowly making him stupider, the crew uses Professor Farnsworth‘s (Billy West) shrink ray to go into the sandbox and save Nibbler’s mind. The episode is a callback to Fry‘s (West) infestation of worms which made him smarter back in Season Three, but it’s really just an excuse for Futurama to have fun parodying various aspects of Dune. The episode falls apart when Nibbler’s damaged brain decides he’d rather stay dumb, logic that doesn’t make any sense but does offer the chance of a nice bittersweet moment for Leela (Katey Sagal). This is immediately wiped away with Leela’s last-second discovery of how to save Nibbler’s mind (which will likely be ignored for several more episodes until the plot calls for it to be referenced again).