SNPP (Springfield Nuclear Power Plant) is the bible of the Simpsons cartoon series and has been online since 1994. The 'capsules' are a must read for any Simpsons fan, they provide an overview of every single episode.
The British Museum is a museum of human history and culture situated in London. Its collections, which number more than seven million objects are amongst the largest and most comprehensive in the world. There is no admission fee.
The Acronym Finder. If you are forever wondering what RSVP stands for, or other such abbreviations then wonder no more. This site lists over 125,000 of them. Find out what the worlds longest Acronym is
MSN Encarta online is a great reference site. There's a world atlas with detailed cultural and geographic data, a world English dictionary featuring spoken pronounciation plus a searchable encyclopedia