Take a look at flash on the right hand side of b2bcredit.com. It's just looped logo transitions. I'd like to do the same exact thing.
Here's the order of logos: [url removed, login to view], Chevron, Citibank, Office Depot, GMC, Wells Fargo, Lowes, UPS, Dell, Arco, Best Buy, Staples, Ford, Sears, Home Depot, Shell, HSBC, AT&T.
You can get the logos just about anywhere.