I love Katy Perry's 'ROAR'. Just ask my kids. As soon as I hear it, I turn up the volume. Always. No matter what. No exceptions. After watching this video put together by the patients, parents, doctors, nurses and administrators at the Children's Hospital at Dartmouth-Hitchcock in Lebanon, N.H., I love it even more. [HTML1]   I hope these kids never lose their fight and always, always continue to ROAR.