The Outerbanks Magic Seaweed link is my personal favorite Swell forecast link.  If you click on the LARGE tab it expands the map to the entire atlantic ocean and you are albe to see where and when the swells originate from.  You can track storms as well as frontal systems all the way across the ocean.  You can also change to map to give you wind and pressure readings.  Not many sites actually give you an isobar map anymore much less a forecast isobar map.