One great guide about Rio: "Rio for Partiers, Visual Travel Guide to Rio de Janeiro", by Cristiano Nogueira, Sol Cat Publishing. It is basically divided into three main parts: Daytime Activities (Relaxing/Sport/Cultural/Pricey/Rainy Day), NightTime Activites and a Food Guide. It has many, many fotos, illustrations and maps and the text is very informative and humourous.
In the end of the book you also find how to do business in Brazil, great destination close to Rio and z "Brazil at a Glance" chapter with tips of cities to visit. Fantastic !
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