I'm in Firefox 2. The checkmark bullet points overlap the elements above them in the review boxes by 15 pixels or so. A few other page elements also overlap similarly (-15 pixels on the "y" axis.)
I agree with other posters who suggest putting the body content into a free Wordpress theme for a nearly instant professional look. The body copy itself is looking pretty good. The purple background needs to go.
The "Featured On" logos at the top of the page aren't too useful/convincing, without reference to articles about your niche Resveratrol on those networks. I understand you're trying to direct people through the converting product links, but you might want to consider adding some type of article title/publication information to those network images to add weight. For example (obviously refer to an existing article for credibility) just a short '12/08 "Resveratrol - Cardio Miracle"' label under the CBS network logo, in the same image file perhaps. Just a thought.