This book changed my life, but mostly for the movies in it. Drop everything you're doing and watch the Philadelphia Story, Gaslight, It Happened One Night, Mr. Deeds Goes to Town, Adam's Rib, His Girl Friday, the Lady Eve, Now Voyager, Stella Dallas, The Awful Truth (and any other Preston Sturges movie), and Pygmalion.
Cavell's thoughts on historical philosophical figures are insane but usually interesting. His theory of perfectionism is not terribly interesting to me, since I'm a pragmatist and not stuck between Utilitarianism and Kantianism. Sorry, Emerson doesn't really do it for me. I think the movies do illuminate what moral discourse should look like as well as the kind of moral life that philosophers often ignore. The idea of a 'remarriage comedy' is also a fruitful one.
I understand the book to have been taken from lecture notes, but I can't imagine what taking this class must have been like. It took me years to get through this book. I put it down in grad school almost 10 years ago and picked it up again last year. Reading it alongside these movies certainly made me appreciate them and think about them holistically.