Was this posted already? According to UK's Daily Mail German scientists apparently found that caffeine may hold the cures to baldness. Dont bother running to the break room for another cup of coffee, you'd need 60 cups apparently to stimulate hair growth. Depending on your weight, that amount could kill you so best check first with the Death by Caffeine Calculator. (Thanks showem for the energy fiend site).

QUOTE
caffeine works by blocking the effects of a chemical known to damage hair follicles. But drinking plenty of coffee may not be the best answer. Scientists estimate up to 60 cups a day would be needed for significant amounts to reach follicles in the scalp. Instead, German cosmetics firm Alpecin has developed a caffeine-rich solution that can be rubbed on the scalp. [...]Dr Tobias Fischer, who carried out the latest research at the University of Jena in Germany.

Oh and for you Daily Mail haters, here's the abstract from the International Journal of Dermatology