Mpreg Central

http://www.theguardian.com/film/2011/may...arlie-lyne

The last movie on this list.

http://www.rottentomatoes.com/m/pregnant...pregnancy/

And this.

Those two aren't unknown, the first one is the Russian film "Беременный", the second is just a documentary (based on a book written by the narrator) about expecting fathers, there aren't any actual pregnant men shown in that film, though I must add that near the end of the film, the narrator mentions the possibility of men becoming pregnant in the near future.

I saw the first one and it was good.