Ho Yay: There were a couple of episodes that had Rat being a bit affectionate to Long John, for example while teaching Jane during "The Merman Prince" episode on how to be a lady, when Silver demonstrates his complimentaries to Rat, he's actually smittened.
Jim even moreso. He's been mutated by crystals in one episode, almost watched Jane die not once but twice (the first time, her soul got sucked out by a demon, the second time, she was bitten by a venomous snake)and was psychologically tormented by the pool of prophecy. After all he's been though, it's hard not to just reach into your screen and hug the poor pup.
Keep Circulating the Tapes: The show was only released on VHS in Australia, long ago. In addition, some people taped the show off the air. Otherwise, NO releases to this day. If you come across this show anywhere, save it. And never lose it.
Moral Event Horizon: If he hadn't crossed it as much during the series, Pew does at the final episode when he kills Captain Schmolett.
Vocal Dissonance: Dawn French doesn't even attempt to make Jim sound masculine. This was fixed in season 2, replacing French with John Hasler.