John wayne's last movie, the shootist, was, i think, one of his very best.
featuring lauren bacal, jimmy stewart, ron howard, richard boone, hugh
obrian, harry morgan, and john carradine the shootist had an extraordinary
cast as well as an excellent story based on a novel by glendon swarthout.
John wayne filmed the shootist with only one lung. In fact he filmed his last six
or eight movies after having a cancerous lung removed. I guess you've heard
that john wayne was tough, but this is more than tough because his discomfort
never showed on screen until the shootist. John wayne would just suck it up
and go to work. In the shootist pain and discomfort was part of his character so
he didn't have to reach far to play j. B. Brooks; the gunfighter dying of cancer.
I had friends/customers who worked on some of john wayne's last movies and
they told me that he was obviously experiencing great discomfort, but he did not
speak of it. Though he was sometimes understandably grumpy he was always
good to those he worked with and always gave them a moderate bonus at the
end of filming.