Does anyone have a good chocolate icing recipe? I need a thick, fudgey icing that's still spreadable enough to ice a cake. I don't want chocolate buttercream....I assume you can just use ganache, but I'd like a ratio or something. Any suggestions?

Yes, you can use whipped ganache as a lovely fudgey frosting. There's a good discussion on this thread that includes ratios: http://www.cakecentral.com/cake-decorating-ftopict-8475.html