A hint book found in the bargain bin at Software Excess. It provides hints for Space Quest IV: Roger Wilco and the Time Rippers (despite the fact that you're actually playing it). It costs five Buckazoids. While there are a few hints which are actually useful, most of them do not apply to anything in the game.
Behind the Scenes Edit
The description says you'll think you're an idiot to not have figured out the puzzles yourself, referencing those who use hint books to beat games rather than trying themselves (compare people today who use GameFAQs constantly).
An actual walkthrough website was named after the book.
One hint references the film Poltergeist while another references the infamous Life Call commercials.