This file contains over a hundred satellite overlays from numerous weather sites. Most all of the images available through the CIMSS website (http://cimss.ssec.wisc.edu/tropic/) are available in this file, including image loops. You will find dust, shear, wind, steering, and other imagery from that site that relate to the Atlantic.
There is a lot of NOAA imagery, Quikscat data, lots of SST data, products from TAFB, such as surface analysis, genesis products, and a whole bunch of satellite images. Let me know of any sites you know of that might have imagery that works well as overlays. Not all images will work as overlays for Google Earth, but I'll check out any links people have.
A computer with a lot of memory and a broadband connection is recommended, most especially for the loops.
Also contained in this file is network links to the latest storm model data for the Atlantic basin.