!!The TV show:
* CreatorsPet: Chett. The producers liked Lee Tergesen's LargeHam performances so much that they started writing bigger and bigger parts for Chett, eventually making him a SecretKeeper in the final season.
* GrowingTheBeard: Starting in the second 13-episode season (when Wyatt's hairstyle changes) the writing improved considerably, moving away from the premise of the movie toward more fanciful magic and sci-fi adventures, and giving Chett more to do than just be the ButtMonkey.
* HeartwarmingMoments: At the end of "Grampira," Wyatt and Gary (who, thanks to Wyatt's Nana's VampiricDraining, have essentially become old people trapped in young people's bodies), bring Nana back to her nursing home to reverse the spell and restore their own youthful energy. Nana not only readily agrees to go back, but tells Wyatt that being young once was enough for her--she's lived a long, happy life, enjoys her retirement, and especially likes to spend time with her grandchildren. The episode ends as Nana eagerly greets her also-retired friends, and Wyatt smiling as he watches her.
** The guys need to use Frankenstein's equipment and the help of the Creature himself in "Searching for Boris Karloff" in order to save Lisa:
--->'''Wyat:''' Lis, I don't know if you can hear me, and I know we don't have the slightest idea what the hell we're doing, but we're still gonna try. And if... if it doesn't work, I just want you to know that the best wish you ever granted us was being our friend. ''[to Gary]'' You okay?\\
'''Gary:''' [[SandInMyEyes Yeah, yeah. Something in my eye.]]\\
'''Creature:''' [[BlatantLies Mine, too.]]
* HilariousInHindsight: "Bikini Camp Slasher" parodies all the horror/slasher movie tropes--about a year before ''Film/{{Scream 1996}}'' came out.
** In "You'll Never Eat Brains in This Town Again," while trying to coordinate a stunt, Chett kicks a zombie's head off - except he thought it was just a student actor and subsequently thinks he killed someone. While trying to bribe Wyatt into not testifying against him, a panicked Chett exclaims, "I can't go to prison!" Turns out, [[Series/{{Oz}} he did go to prison]].
** In the second episode, Wyatt and Gary get a hold of a universal remote that allows them to control time. [[Film/{{Click}} Sounds familiar.]]
* NightmareFuel: Enough to keep you having nightmares for a week or so, but not quite to Creator/StevenMoffat's extent.
* WhatDoYouMeanItsForKids: A bit too adult for teenagers, possibly...
** "It's purely sexual"
!!The film:
* [[ClicheStorm Cliché Storm]]
* SignatureScene: Lisa's first appearance and first words: "So, what would you little maniacs like to do first?". This is the scene most frequently parodied.
* StrawmanHasAPoint: Gary's father. Even a liberal parent would think more than twice before letting his/her 15-years-old kid go to a party so vividly (and without a slightest trace of irony) described by Lisa.