Possibly even the favorite.
It never ceases to amaze me how many have never even heard of this film.
It's worth seeing for the skating scene alone.
I know it's not Cary Grant doing the skating, or playing the harp (see if you can figure out how they did those shots - I can't), but does that really matter? No, I think not.
If you haven't seen this Christmas miracle classic, I highly recommend picking up a copy at your local (online?) movie rental. Or you could just buy it. You can also buy a copy of the soundtrack here.
Cuz, I gotta tell ya, that Archibald Leach really knows how to show a gal a good time.