The Life Cycle of Stars

There is so much excellent material on the web I have not written anything. Please tell me about any other good sites you find so I can include them.
.
Links
  1. Nuffield Project (this is a great site)  
  2. Montana University Site  
  3. Mike Guidry's site
 More Links
  1. NASA Poster  
  2. Images  
  3. American Institute of Physics  
  4. American Institute of Physics (requires RealAudio Player)  
  5. Another Useful Site 
  6. Enchanted Learning site