Lois's hands move several times when she is being criticized by the other women while making the tart.
Malcolm puts a CD with Albinoni's Adagio for Organ and Strings into his CD player. It should start at the beginning but instead starts part way into the piece.
When Malcolm is listening to the music at the beginning the CD player clearly displays that no CD is being played.
In the cold open, Reese is seen holding a "Notice of Suspension" letter from his school. It contains "This sentence is only being written to fill some space. I'm sure it will help." twice in the letter.