I haven't watched this movie yet, as Ken recommended it. It seems to be doing quite well in Japan and South Korea's box office because of the cultural contrast to the elderly in these two countries.
I thought you would be interested in the following story from The Wall Street Journal.
‘The Intern’ Is a Surprise Box-Office Hit in South Korea
http://blogs.wsj.com/speakeasy/2015/11/09/the-intern-is-a-surprise-box-office-hit-in-south-korea/
Download the Wall Street Journal app here: WSJ.