When the Calvins are discussing ideas for how they will explain their absence to their new community, Scott says, "I don't know about lost on an island," and Carol (Elizabeth Mitchell) replies, "Just begs more questions. Trust me." Elizabeth Mitchell starred in the TV show Lost (2004), in which her character is stranded on an island.
When Scott and Carol are at the coffee shop, Scott goes up to a kid and says that he knew the boy would like the Buzz Lightyear pajamas. Tim Allen (Scott Calvin/Santa Claus) voiced Buzz in the Toy Story movies and shorts.