Wayne and Diane's wedding was on Oct 22, but Wayne didn't remember to sign the certificate until October 23rd.
Amy goes back in time to spring 1976, but Space Invaders was not released until 1978.
Diane Szalinski wraps a present for Wayne, a book called 'Particle Acceleration for Morons!' This references a serious of "For Dummies" books, which deals with a wide range of subjects. Some examples are 'eBay for Dummies,' 'Fishing for Dummies' etc. Each book is created for the person who knows nothing about the subject and it gives them the basics so they can begin doing an activity.
Wayne Szalinski: Don't laugh, treated properly Silly Putty is the second most unstable substance in the universe. You could remove ink off papers (usually the comic pages) and have it show up on the putty, which you could then stretch the image into unusual shapes.
Paul O'Donnell: We need a game with a little more excitement. SPACE INVADERS! Space Invaders is a popular classic video game. In it you have to defend the Earth from alien attackers.
Andy-Reading: 'Fan Chat Magazine' When Amy goes back in time we see Andy reading 'Fan Chat Magazine' with a picture of Jaclyn Smith. She played Kelly Garrett on TV's Charlie's Angels.
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