Kids

• San Franciso Symphony Kids

Images

• xkcd
• DeviantArt - very large collection of interesting images

Mathematics

• Rob's Polyhedron Models - a very cool collection!
• ContextFreeArt.org
• Wolfram Demonstrations Project: demos of a wide range of mathematical concepts
• Clay Mathematics Institute: Millenium Prize Problems (NP Completeness, etc.)
• Math In CS
• Netlib Repository at UTK and ORNL: mathematical software

Misc

• SCIgen: an automatic CS paper generator with some cool results!
• Urban Legends Reference Pages
  • also: Urban Legends and Folklore
• How Stuff Works.com
• Jaberwocky
• Powers of 10
• Smile2: dancing pictures
• How to Write Unmaintainable Code
• All Your Base

Music, Audio Books

• Wicked Synopsis - geared towards the cast recording
• LibriVox.org: (free) family classics
• AudioBooksForFree.com: more family classics

Computer Games and Board Games

• NotDoppler - physics game
• Portal The Flash Version
• Plasma Pong
• filler
• magicpen
• LineRider.com / play
• WebSudoku
• Need for Speed High Statkes w/ ATI Radeon 9200
• Chinese Chess Rules
• ArcaMax (free games)
• Battle for Wesnoth
• Armagetron: Tron clone in 3D
• N (by metanet software)

Space

• Space Telescope Science Institute Home Page
• Goddard Space Flight Center
• Universe Today
• MAP Satellite: results (age of universe, number of atoms, etc.)
• NASA Human Space Flight - Realtime Data
• Earth at Night; see also here
• Lunar and Planetary Institute (NASA): space exploration
• Earth and Moon View
• NASA Eclipse website
• History of the Universe (timeline at Nova site)
• Apollo-era Digital Archive - scanned copies of the Apollo moon photos

Animals

• Crocodile vs. alligator

Exploring the Web

• Great Sites for Children

Robotics

• AmigoBot: educational use robot

Literature/Books/Stories

• Narnia
  • narnia.com: pictures, etc.
  • Into the Wardrobe: material on CS Lewis; pictures
• The Lord of the Rings
  • Encyclopedia of Arda - lots of info on the LOTR
  • Map Collection
  • Yahoo site
  • More middle earth maps
• Harry Potter
  • DumbleDore Is Not Dead!

Misc

• Knock Knock Jokes!
• Game Rules Index
• RCA Universal Remote Control Programming Codes

Kids, Toys

• PlayMobile
• Camp Invention
• FischerTechnik
• How to break in and care for your new baseball glove
• First Aid for Breyer Model Horses
• American Science & Surplus