Cary Grant’s performance of the act of being drunk is A1 stuff. He acutely understands the delicate balance of recreating for an audience a feeling that is both familiar and unfamiliar because it is nor only rooted in emotion, but in actual physical impairment, we know the feeling, but we can’t connect to it because this is not emotion, which is a response, but a provoked response, it may be deep seated but it can be reached and voluntarily initiated. Physical impairment is not really as much a response as it is a lack of one, and when it is ( the case of drugs) it’s the bodies involuntary response. In most cases this is exactly why we shouldn’t have able bodied actors playing disabled roles as it not only has the sting of normative audacity, but it flies in the face of what it is actors do. Put more simply, another good reason physical impairment should not be played is because it inherently requires you to “act” in the most derogatory meaning of the word. Put even more simply in the slightly adjusted words of Robert Downeys actor from “Tropic Thunder” “Never go full Drunk”. There is very little truth in these performances for that very reason, but I digress….Grant understands the idea that the trick with drunkenness a different kind of impairment is to try very hard not to appear drunk, but also understands how it relates and applies itself to his character Roger Thornhill. Alchohol affects people differently , its important to understand who you are sober can be in relation to who you are drunk, but it is also an exaggeration of who you are not necessarily the one you want to count on. Grant decides to slow down Thornhill’s attention while speeding up his focus, because sober Thornhill’s focus is sharp and lingers, but in this state his attention is allowed to roam and be on the go. Cary’s dance background is also put to good use in maintaining his balance while being off balance which gives the perception of drunkenness. Watch how he is kind of spun into the direction of the phone from the bench, this is clearly like a dance , but it’s also part of an effort to be so sure about where he is going. .