The movie bible for Salesmen

The title of the movie sounds like some autobiography - "Glengarry Glen Ross"
but what it is ... is definitely a delight and more-so a grim reminder of the ways of any salesmen
The Story ( source : Wiki); occurs within a span of 2 days (in fact 1 day and 1 night) and explores almost all possibilities of deception, ferocity, anger and in fact vulnerability across any sales reps life.
Though the movie is jam-packed with powerful performers; including Alec Baldwin who steals the thunder within under 5 mins of screen presence; I really fell in love with the character of Jack Lemon.

Do check out this YouTube Clip and also the movie if possible. Though it might be depressing; it is extremely honest in the portrayal.