In case you missed the important news, U of Scranton Prof. Joe A. Vinson (no relation), says coffee "has more antioxidants than any other food or beverage in the American diet." A recent study has been picked up and distributed by AP and other news organizations.
Looks like I am all set in terms of antioxidants.
Interestingly, his website has a research report from 1999 that says essentially the same thing, Take Two Cups of Coffee and Call Me Tomorrow.