Tripping the Rift - Season 2 Episode 11 -

When Commander Adam's jet goes down on Vitalius 4, his wife Nancy implants a nonobot parasite in Chode's head and threatens it will eat his brain if he doesn't bring adam back in 24 hours. Armed with a ticking "Death" watch, and a PDA to track Adam's life signal, Chode and the crew arrive on Vitalius 4 - a planet renowned for its heinous creatures.