I thought this was a fascinating rendition of Norse Mythology. I had heard a few months ago about the mythology in the context of Beowulf, and I just watched the movie Thor. So now, after listening to this (which I highly recommend- Neil Gaiman has the most amazing voice and narration for the book), I think I'm slowly realizing how much I don't know. But there are some pretty interesting stories of those silly crazy gods.
I may re-listen or read it again to discover things I may have missed. The book certainly is easy to follow and again, very entertaining, but it's one of those books that you may need to revisit in case there are some things you missed.