It's a Blake Edwards...what more can I say? If you like comedy, you like Blake Edwards no doubt. If you don't like Blake Edwards, you have no sense of humor. And we all know what Steve Martin says about that; "Of course you have a sense of humor. Everyone thinks they do, even people who don't."
But seriously, 10 is typical Blake Edwards. Another story about a Hollywood man going through a mid-life crisis. And in the case of Dudley Moore, doing it as about as humorous as he possibly can. Julie Andrews, as usual, adds so much to these movies with her dry British wit.
If you haven't seen it, and you are wondering if you should, see it. You should be ashamed for not having seen it already. If you haven't seen it, and have no interest, you must like movies about Nazis drowning puppies. And if you have seen it and regretted it, then I hope the medication is working.