I tend to have a problem with plots where the leading man isn't listening to what the leading woman is saying and then the script proves him right in the end, as if the leading woman doesn't know what she really wants. So there was that, but putting that aside (as I have to do so often when watching movies) this was chock full of witty banter and really clipped along, which is not necessarily a feature in movies of yore. Overall, a very good watch.
poster from: http://www.allposters.com/-st/His-Girl-Friday-1940-Posters_c43268_.htm
This poster is hideous! What have they done to Rosalind Russell?