I once played along with a scammer that said I had won some money in Vegas that I had left unclaimed. The kind of money that you had to pay taxes on first before it would be sent to you. It went on for several phone calls over several days until I finally got him to admit that he was a scammer. We actually had an interesting conversation after that -- like apparently a lot people fall for his scam. He even asked me how I thought he could improve his scam to make it more believable. But then he had the audacity to ask if I could give him a list of names and numbers he could try his scam on. Well, I told him that I could send him a list of 100 people, all he had to do was first send me a valid $100 Walmart gift card. :-D
-NP Never underestimate the creativity of the end-user