Cheaper by the Dozen 2 (2005)
When Tom buys a ticket for the same movie, that Sarah and Eliot and his father attend, there is a poster of the older film in visible in the theaters lobby.
Mentioned as one of the answers.
Clyde mentions the film that Justin (Kevin G. Schmidt) actually appeared in.
Show mentioned by Nick Swardson
Sarah and Eliot are watching this film on their first date, in the movie theater.
Clips shown for the review.
After the dog ruins the luncheon and Tom and Jimmy are looking for the dog, they play the classic cue music from Jaws.
When Kate gives birth, it spoofs this movie where Helen gives birth.