The Mystery Science Theater 3000 Amazing Colossal Episode Guide was a book written by various members of the Best Brains and published in 1996.
As the title suggests, the ACEG consisted mainly of summaries of each episode of MST3K from seasons 1 through 6. Additional chapters contained information on the show's beginnings at KTMA, the first ConventioCon, and the making of Mystery Science Theater 3000: The Movie, as well as explanations of "The 50 Most Obscure References on Mystery Science Theater 3000".