Yahoo Kids: Filled with tons of fun interactive games

http://kids.yahoo.com/

4 Kids: Filled with funny videos, fun games, and much more

http://www.4kids.org/

Help with typing: Fun way to practice typing

http://www.bbc.co.uk/schools/typing/

Phil Tulga: Music and Math all in one 

http://www.philtulga.com/resources.html

NASA: See space in a whole new way

http://www.nasa.gov/