All Work and No Play: Quiz for the Day

The Shining Everyone knows that the greatest spoof of experimental poetry in the history of movies is in Stanley Kubrick's "The Shining." It's when Shelley Duval leafs through the writing her husband (Jack Nicholson, left) has been doing ever since their arrival in the desolate, out-of-season, haunted resort — and discovers that it consists entirely of one sentence, repeated page after page after page: All work and no play make Jack a dull boy.

There is another instance in film history in which this line figures. A character in a position of high authority, struggling to motivate tired, overworked men in horrible conditions, speaks these words in heavily-accented English trying to sound a jolly note. He has just announced a day off for all. At predictable intervals he tells people to "work and be happy."

OK. 1 & 2 Who is the character and who plays him in what movie?
3 Who are the lead actors?
4 Who wrote the music?
5 What old military march did the director appropriate? 
6. What is the last word in the movie and by whom is it spoken?

DL

Since the answers are given in the comments, why don't we add a great big clue right here:

Bridge on the River Kwai