Yes, chocolate is good for you

A new Dutch study shows that consuming chocolate or cocoa products helps reduce blood pressure.
Ok, ok – it doesn’t really, it just shows that healthy, elderly men who ate more chocolate had lower blood pressure than those who ate less. And as we all know correlation does not necessarily mean causation.
But other small studies have shown the same effect and cocoa beans contain flavanols, which are thought to increase nitric oxide in the blood and improve the function of blood vessels.
Arch Intern Med — Abstract: Cocoa Intake, Blood Pressure, and Cardiovascular Mortality: The Zutphen Elderly Study, February 27, 2006, Buijsse et al. 166 (4): 411