The Donahueite world-view is of a linear life. When a certain number of years have elapsed, it's over. Period. It's a pathetic picture, and one people seldom look at unless it is forced upon them as it was with poignancy and wit in City Slickers. While this movie may not rank among the great morality plays of all time (and some would find parts of the film offensive), it certainly drives the point home, along with the cattle.

Comedian Billy Crystal plays the part of a bored baby boomer who sells radio advertising time. On the day he visits his son's school to tell about his work along with other fathers, he suddenly le…