Looks like Thyme. Maybe this?
http://images.google.com/imgres?imgurl=http://indianspringherbs.com/Images/Thyme.jpg&imgrefurl=http://indianspringherbs.com/Creeping_Thyme.htm&h=335&w=344&sz=28&tbnid=h0BCueMSjC-pxM:&tbnh=117&tbnw=120&prev=/images%3Fq%3Dthyme%26um%3D1&start=3&sa=X&oi=images&ct=image&cd=3