I find this story in USA Today about more American men taking their wives' last names (via kottke) rather interesting as a snapshot of gender attitudes. My impression of the American Male is that a lot of them are awfully defensive about their masculinity, much more so than men elsewhere, which explains the "sissy juice" comments received by Sam Van Hallgren (who, incidentally, is co-host of the one podcast besides This American Life that I listen to religiously, Filmspotting.)
In Japan, men have been taking their wives' last names for a long time. This may seem surprising in light of the view of Japanese society as being very male dominant. In fact, it's done for practical, usually business, purposes. If the woman's family has a well known business which is run as a family concern, and the man marrying the woman is going to enter, and eventually take over, that business, he is legally adopted by the woman's family and thus takes her surname along with it. This is called becoming a yo-shi. The word and concept is the same as for a child being adopted.