There is a pop band that is famous all over the American continent. It has filled venues in Brazil, Argentina, the United States, Colombia and Mexico.
Their music is rather plastic (as is the "band"), but they are a money-making machine. They have been involved in a series of scandals, such as when 3 people died in an autograph-signing session in Sao Paulo in 2005, and when one of their singers confessed to being gay a few months ago.
Why do I talk about them, if their music (and the overall concept) seems to me rather bad? Because, firstly, I believe they're a perfect example of the power of telenovelas and the marketing around them as a mostly Latin American phenomenon with an expanding reach. Furthermore, I wouldn't be surprised they would cross-over to the English-language worldwide market, as was the case with Shakira and Ricky Martin.