When Frank arrives home for his "special evening," there's an old portrait hanging next to the front door. A few minutes later when Jane leaves, it's a similar, but different, portrait.
At the beginning, a bench is seen at the end of the stairs. When the prams roll down the stairs and ram into the bench, the bench has moved closer to the stairs and is now bigger.
When Frank receives his ticket at the sperm bank from the receptionist, it rotates 180 degrees in his hand between shots.
When Frank is disguised as Phil Donahue, he jumps on the end of the stairs, but in the next shot, he's on the side of the stairs.
When Rocco grabs the envelope from Frank the flap opens and closes from shot to shot.
A road sign in the Geriatric Park parody is misspelled "Seisure World". It should be spelled "seizure".
When Frank's retirement mural is unveiled by the team, a dedication can be seen to "Elliot Ness". The name should be spelled Eliot Ness.
There is no way Rocco could be launched through the bottom of a helicopter and be in one piece. This is obviously meant as a joke.
The Academy Award nominees are not announced in alphabetical order as it usually is. This is a comedic depiction of the ceremony, the filmmakers can do whatever they want.
When the prams roll down the stairs, two of the prams jettison their baby dummies before they hit the bench.
When Frank burps up the shredded pieces of paper, pieces are seen coming out even though his mouth is almost closed.
When the prams roll down the stairs, the ignition pipes that shoot out the babies can be seen.
When Frank is going through a file drawer containing information on major historical mysteries, the name on one file is misspelt, "Amelia Earhardt".
Amelia Earhart's last name is misspelled as Earhardt in the secret files at the sperm bank.
When Rocco is testing the bomb in the morning in the cabin, and says, "We're going to detonate it", his mouth isn't moving with the words.
In the clip from the fictitious film "Mother", Mother Teresa is dancing around and singing, but her mouth is not moving.
When Rocco's mother goes to talk with Rocco in prison, the cameraman is vaguely reflected on the first prison visitor cell.
Camera equipment shadow on Frank's police car after water from the water slide splashes onto it.