[Shane]

if you look at your keywords then hover over the magnifying glass symbol to the right of each one you should get a pop up explaining any problems with the keywords and why they may not be showing .. two quick ones that spring to mind are :

trademark infringment
keyword doesn't get enough traffic to warrant showing your ad yet but if traffic increases google will start to show your ad (always struck me as dumb reason that one)

if there's nothing showing in the hover pop up then it could be that your keywords are still held up for an editoral review so to double check that give your adwords account rep a call