ST-ECF
The Space Telescope European Coordinating Facility supports the European astromical community in exploiting the research opportunities provided by the Hubble Space Telescope (HST).
http://www.stecf.org

Ball Aerospace
Manufacturer of seven of the major science instruments installed on Hubble.
http://www.ball.com/aerospace/hst.html

Wide Field Camera 3
This new instrument will provide panchromatic imaging for the Hubble Space Telescope.
http://wfc3.gsfc.nasa.gov

CNN: Discovery Hubble
The program has video footage of spacewalk maintenance missions.
http://www.cnn.com/TECH/space/hubble/index.html

NASA: Hubble
Official page covers information about the shuttle mission, crew, instruments and new projects. Includes live webcams, images, and history.
http://hubble.nasa.gov/

STScI Hubble
The official online home of the Hubble Space Telescope has images, news, facts, astronomy education resources, games, and a multimedia trip through time.
http://hubble.stsci.edu/

NASA
Get the current position of the HST.
http://liftoff.msfc.nasa.gov/temp/HubbleLoc.html

How Stuff Works: Hubble Space Telescope
Find out what it can do and how it works with these detailed graphics and descriptions.
http://www.howstuffworks.com/hubble.htm

ACS: Advanced Camera for Surveys
A third-generation science instrument that will increase the discovery efficiency of the Hubble Space Telescope (HST) by a factor of ten. The ACS science and engineering team is concentrated at the Johns Hopkins University and the Space Telescope Science Institute.
http://acs.pha.jhu.edu/

http://hubble.esa.int/
European Space Agency site with images and videos in various resolutions up to broadcast quality, an FAQ, links to other resources.
http://hubble.esa.int/

Hubble Hits
Discovery Channel stories about the Hubble Space Telescope (HST).
http://dsc.discovery.com/stories/science/hubble/hubble.html