I first heard a couple of the Goat Rodeo Sessions songs on the Colbert Report (after a friend of mine suggested that I watch those segments). My husband and I liked those songs so much, that I bought him this album for Christmas. We have both greatly enjoyed the album since Christmas. It's definitely unusual music (bluegrass, Celtic, classical...), but there is a method to the madness and the effect is very pleasant and powerful, in my opinion.
I highly recommend watching the Colbert Report segments before purchasing because having seen these pieces performed has definitely enhanced our enjoyment of the CD.