I think Riverdance will be the starting point for a lot of adults and children who will eventually explore the traditional music and dance of Ireland. Just like the Kingston Trio and Peter Paul and Mary got a lot of US interested in traditional forms of American music. Many of us started there and went on to other "hipper" performers. Riverdance is not my cup of tea - I'd rather be at an Altan concert myself - but if it promotes interest in this genre then I'm all for it.