Rhetorical Analysis
Since I did not go to a cell phone kiosk or gym or any other kind of place where someone could try to convince me to buy something, I will appeal to the movie I saw last night (for the first time): Ocean's 12.

Audience: Any of the 11 members of Danny Ocean's group of thieves who stole $160,000,000.00 from Vegas magnate Mr. Benedict.

Argument: If you do not pay back Benedict all of the stolen money plus three years' interest, you will die.

Ethos: Benedict behaves very calmly as he approaches each of the members of Ocean's group. He restrains himself by not yelling at anyone, and thus makes himself seem more in control. He has a balanced methodology in his approaches to the different characters. He uses some effective, forceful imagery with Brad Pitt's character. As he talks with Brad on the phone, he describes with perfect clarity Brad's house, his garage of cars, and the car Brad is about to get into as he talks on the phone. Benedict then detonates Brad's favorite car right before he gets into it, showing that Benedict has control over Brad if Brad does not fulfill with his every demand. He also disrupts the wedding luncheon of one of the Mormon twins in Ocean's group and declares that the young man's honeymoon would have to be postponed until he could pay his debt.

Pathos: Benedict is clearly appealing to everyone's fear. He blows up Brad Pitt's car, he threatens Danny Ocean's wife, etc. He shows that he can have any member of the group killed at his whim.

Logos: Benedict has in his reach a squadron of muscular cronies, explosive devices, the reconaissance to know where everybody is at one time, and a seemingly endless supply of money. Due to his demonstrations of power, it is obvious that he can indeed have anyone murdered on the spot if he does not receive his money.

WATCO paying $160,000,000.00 in stolen casino funds (plus three years' interest) to Benedict ON your physical well-being?

If you return the stolen funds and interest to Benedict, you will not be harmed physically.
Anything which will please Benedict and cool his temper on your behalf will persuade him to let you live.

Effective?
I would say that it is very effective. All of the members of the group took great risks to recover the money, including stealing ancient religious symbols and historic financial documents. In the end, the money was given to Benedict, who "pardoned" their lives.