This Good Guide tool is great. I've just discovered it over at Sociological Imagination blog, and while it may not reveal the truly surprising data, it's still great to see what kind of policies are companies leaning towards.
Noteworthy: the biggest brands today - those in "Food and Beverages" category (Coca-Cola, Kraft, Coors, Heinz) and in "Retail Sales" (Walmart, Target, the Home Depot, Sears, Limited Brands, Staples, Office Depot, and Chanel) all made their donations exclusively to Republicans.
Hm.