Sorry if this is common knowledge... but I do not see this posted anywhere.
During attract mode, hit the following flipper combination:
Left x 3, Right x 3, Left x 2, Right x 2, Left, Right
You will be shown a secret screen...
Mary Shelley's Frankenstein has a number and text of "Bottles Of Beer On The Wall"
Baywatch has a picture of a Craw, a number, and text of "Craw Sightings"
Batman Forever has a number and text of "Bottles Of Beer In The Craw"
Anyone know the story behind these? What number does your game show? Is it always 00?