I have to say this thread has made for some interesting reading.
Here is my take on Lance. Lance has never said that he doesn't use performance enhancing drugs. Lance has said that he doesn't use illegal performance enhancing drugs. What is the difference between the legal and illegal drugs? WADA has "The List" which names every known illegal performance enhancing drug and / or method. Technically speaking you can use substances and / or methods that aren't listed and still be a "clean" racer.

Look carefully at the latest issue of VeloNews. How many adds can you find that offer to improve your performance( increased energy, improves performance,promotes faster recovery so you can train harder, increases VO2 )through the use of pills, drinks or other supplements. Are these supplements illegal? Are you cheating if you use them? If your anwer is "no", then why wouldn't you use pharamceutical grade drugs / supplements under the supervision of a medical doctor for the same effect if they weren't banned?