As Time Goes By is the best song in a film of all time. Listening to it again, it captures the whole mood of the film so well, that I'm not sure another song compares in this regard.

I think the Entertainment, Sports and Media club should host a panel on song and film. The business model of having a hit song to go with a hit film is a winner and I wonder if studios really put the full effort into the music side of the equation. In my experience, the soundtrack has been a mere afterthought.