Real-Life Relative: The actor who plays Allison's brother Marcus is Dondre Whitfield, husband of Salli Richardson-Whitfield. Makes this bit of dialogue sort of meta-Heartwarming.
Allison: Jack Carter might not have the highest IQ in town, but he's the smartest man I know.
Marcus: He married you, didn't he?
Deputy Andy is one big Toy StoryShout-Out. One of Woody's pullstring phrases is "You're my favorite deputy!", something his owner Andy would have heard quite often, no doubt. And Eureka's Andy is a highly advanced android, something Woody's other favorite deputy, Buzz, would be quite familiar with.