There are a surprising number of Daddy products appearing in the baby industry and I have to say, the diaper bags for men are really nice. (My mom will be so sad to hear that yet another passing idea of hers has become a booming market a few years after she thinks of it.)
I like the basic look of this one on ebags.
And I think this backpack is perfect for the athletic papa.
If you want to drop some major bills, this diaper bag from StorkSak is amazing and looks almost like a briefcase (and supposedly Brad Pitt carries it)
I like that as fathers are becoming more involved, they are getting equipped to do so. Hopefully in coming years we'll see things for men start to creep into baby registries.