In one of Steve Martin's early comedy skits, he can't pronounce the word "abominable". Mrs. Arness, near the end when she is "stoned", struggles in a similar way to say the word "abominably"
Steve Martin, Angus T. Jones, and Missi Pyle are from Texas. Queen Latifah is from New Jersey, Eugene Levy is from Canada, Jean Smart is from Washington, Kimberley J. Brown is from Maryland, and Joan Plowright is from England.
When Peter is trying on clothes for his date, he fluffs the color of the blue shirt before he puts on the sweater. In the next shot, one side of the collar is in and the other is out.
At the end of the film, Charlene is in the new office with Howie and closes the blind. In the next shot, a long shot from a helicopter, the blind is clearly open.