I forgot you had to spam him exactly five times with one second intervals, no more, no less.
The best was when Best Buy had that Gears of War preorder ____-up. For $5 you got the 1600 points card and a sealed GoW shirt that you could ebay for like $20, I think I sold like 5 of those so I ended up getting $100 worth of points for free and enough in profit to pay off the game and have some leftover.