Nick Van Owen: (awkwardly, gesturing between the reunited father and daughter) Do you see any family resemblance here?
When the Tyrannosaurus is rampaging through San Diego: while chasing Malcolm and Harding in their car, San Diego police and Animal Control show up. They have just enough time to get one good look at the T. rex before it roars and they throw their cars into reverse.
Also in that sequence, Ian and Sarah are trying to get the T. rex's attention so they can lead it back to the boat.
Ian: It's never gonna know we have it unless that thing makes some kind of sound!
Sarah:(the T. rex looks over in their direction) He knows.
(*CRASH* The 76 ball off of the nearby gas station rolls past their car)
Later, as the T. rex is chasing them, Sarah suggests that Ian should slow down so they don't get too far ahead of the T. rex and lose its attention. Ian takes one glance behind them to see how close the T. rex is and promptly hits the gas harder.
Also from the T. rex's rampage we have a man doing a Godzilla Shout-Out saying "I left Japan to get away from this" in Japanese.
During the scene where the T. rex bites the traffic signal, sharp-eyed viewers will notice that the street sign on the right reads "No Skateboards, No Dinosaurs".
Malcolm asks Nick why he joined Greenpeace. His answer: Women. Malcolm's response: "Noble, very noble."
When they first get to the island, they go into the jungle and find Sarah's backpack. Ian starts shouting, "Sarah!" and Nick yells, "Sarah Harding!" Ian stops, gives him a look, and asks, "How many Sarahs you think there are on this island?" Gets a call back later — when they're searching for Nick, most of the group is just yelling "Nick!" while Ian absentminded chimes in with, "Nick Van Owen!"
Roland Tembo has quite a bit of trouble with the pronunciation of the dinosaurs' names.
And later it seems like his team is having fun with his explanations:
Hunter: Say again, Roland, a what?
Tembo: The one with the big red horn. Pompadour. Elvis!
When the group, looking for Sarah, finally sees their first dinosaur and naturally, Eddie and Nick are slack-jawed while Ian is unimpressed. Ian asks them why they're so shocked and Nick tries to explain that he didn't really think he'd see actual dinosaurs.
Malcolm: What did you think you were gonna see?
Nick: Animals. Maybe, uh, b-big iguanas.
Malcolm: (shakes his head) Fruitcake.
The crown jewel, in this troper's opinion, is when Nick, Sarah, and Malcolm are dangling perilously in the trailer about to fall off a cliff and still have time to be sarcastic.
Eddie: (yells down to them) What do you need?
Eddie: Rope! What, anything else?
Malcolm: Yeah! Three cheeseburgers with everything on 'em.
Nick: No onions on mine!
Sarah: And an apple turnover!
During the T. rex rampage scene, it comes upon the backyard area and starts slurping up the water of a pool. A dog comes and starts barking it but quickly goes back into it's doghouse when the T. rex growls at it. This is followed by a child waking up and seeing it, then going to his parent's bedrooms to tell them. They don't believe him at first, thinking it a usual childhood fear of the dark and eventually go to the bedroom to reassure him there's nothing wrong...until they look out the window and see a T. rex right in of them with the chain of the dog danging from it's mouth along with the doghouse. The parents promptly scream, the child...takes a picture of it.
When Burke describes the way Pachycephalosaur's skull is extra thick on the top of its head and is purposefully designed for absorbing impact. A second later, the Pachycephalosaurus helpfully demonstrates this point by ramming its head into a car door with enough force to send the two men inside the car crashing out of the windows on the opposite side.
Ian gets a golden Brick Joke line, after his daughter uses a complicated uneven-bars gymnastics routine to kick a Velociraptor out the window.
Ian: [incredulously] The school cut you from the team?