Creatine seems to be a popular suppliment in other disicplines, how about cyclists?
http://en.wikipedia.org/wiki/Creatine
http://www.brianmac.demon.co.uk/creatine.htm
http://www.freedomfly.net/Articles/Supplements/supplements7.htm
http://www.roadcycling.com/training/creatineresearchreview.shtml
http://www.vanderbilt.edu/AnS/psychology/health_psychology/creatine.htm
http://wwwchem.csustan.edu/chem4400/SJBR/00sangalang.htm
http://en.wikipedia.org/wiki/Creatine
http://www.brianmac.demon.co.uk/creatine.htm
http://www.freedomfly.net/Articles/Supplements/supplements7.htm
http://www.roadcycling.com/training/creatineresearchreview.shtml
http://www.vanderbilt.edu/AnS/psychology/health_psychology/creatine.htm
http://wwwchem.csustan.edu/chem4400/SJBR/00sangalang.htm