Maniac Mansion

Dr. Fred's Laboratory
Quick rundown of characters, plot, items, and endings
http://www.geocities.com/Hollywood/Lot/1114/maniac2.htm

Jason Harang's fan site
Tips, chat, sounds, endings, a Message Board, and FAQs.
http://www.fortunecity.com/millenium/lincoln/98/

Wired 1.04: The Untold Story of Maniac Mansion
"For Nintendo, the baddest bad word Is Kill." by Douglas Crockford, who had the dirty job of producing the censored NES version <small>(September 1, 1993)</small>
http://www.wired.com/wired/archive/1.04/nintendo.html