Perhaps the most famous scene in the movie Glen Garygarry Glen Ross is the Alec Baldwin speech. Baldwin has a number of lines in the scene that are quoted and used in all sorts of businesses, from real estate to stock traders. Below is a video of the scene along with a few of the more memorable lines.
“We’re adding something special to this month’s sales contest. First prize is a Cadillac El Dorado. Second prize is a set of steak knives. Third prize is you’re fired.” - Alec Baldwin
"ABC: Always Be Closing" and "Coffee's for closers"
Here's a motivational speech for selling real estate or really anything. The Art of Selling by Alec Baldwin. Heads up though, the word "f#$@" and its derivatives are uttered quite a few times in the video below.