When Marvin drops the crates of snacks and falls over the gate of the new day-care center, Steve Zahn fractured his wrist. His final scenes were edited out because he needed a cast.
Ben Hinton tells Eddie Murphy's character "I see your eye twitching!" In Shrek (2001), Murphy's character Donkey says, "Look at my eye twitching!"
When Phil Ryerson slides into scene with his guitar, it's a nod to Tom Cruise's famous underpants slide in Risky Business (1983). The staircase in the background is also in the same position as the one in that movie. Only, Phil is fully-clothed and slides in from the right, not the left.
Becca, the little girl who calls the woman in Hong Kong, after Charlie has the kids run a play for football, was a nod to the guy in the Verizon cellphone commercial: "Can you hear me now?"