I read pretty much anything, from fantasy (City of Stairs by Robert Jackson Bennett) to romance (Bared to You by Sylvia Day) to classics (Heart of Darkness by Joseph Conrad). The only genres I don't read are self-help and comic books/graphic novels.
I really enjoyed this, except for the ending. I don't want to spoil it so I will just say that there were a number of far better ways to end this, other than the one Niffenegger chose. I really enjoyed reading about the twins, especially the fact that they were mirror images of each other (which I had never heard of). By the last 1/4 of the book I was really hating "Elspeth."