These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Big Lipped Alligator Moment: The film features several, some of them simply for comedic value and others for other reasons. The encounter with T-1000 is one example.
When Benjamin tries to talk to Garth, who's making a robotic hand, Garth acts extremely nervous and eventually tries to pulverize the hand. There's never any explanation for what's going on, and it was originally part of a subplot in which Garth is trying to kill Benjamin.
Glenn, the manager of Stan Makita's Donuts, has a few bizarre and creepy rants. He has nothing to do with the plot: it's just funny.
And the trope is actually discussed, and lampshaded, when Wayne reveals his big room full of ninjas.
Garth: What are you going to do with these guys?
Wayne: Oh nothing really. I just always wanted to open a door to a room where people are being trained like in a James Bond movie.
The Catch Phrase Catches On: An apparent specialty of Mike Myers, the film popularized a number of slang terms and saying, such as "No way!/Way!", "Schwing!", "Exqueeze me?" and "Shyeah right! And monkeys might fly outta my butt!"
Wayne at one point claims that Star Trek: The Next Generation, which was still running in 1992, "will never be as recognized as the original." Nowadays, it's easily just as well known. The subsequent shows, on the other hand...
Signature Scene: Everybody remembers the Bohemian Rhapsody scene from the first film.
Special Effects Failure: When Wayne and Cassandra are standing on Benjamin's balcony in the first film, it's very obvious that they're standing in front of a backdrop.
It was also done deliberately, earlier, with 'the magic of Chroma-Key!'
Suspiciously Similar Song: The producers were only able to secure the rights to "Stairway To Heaven" for the original theatrical run. This is why the version you hear Wayne playing on DVD or video sounds absolutely nothing like "Stairway".