Chase Scene: Several, most notably an epic foot chase through the city culminating in a gas station showdown.
Commonality Connection: After getting off to a bad start when Billy's antics embarrass Caitlin in front of her entire science class, the two of them start to bond when they meet each other in the park, both birding.
Caitlin: (skeptically, upon seeing Billy's binoculars) "What are you looking at?"
Billy: "Tits." (beat) "Or as you Americans call them, chickadees."