Product Placement when done correctly is an extremely effective way to advertise. With the increase in DDR use over the past few years, combined with the fact that many people use thier commercial break to get a drink/go to bathroom/talk/etc. If a product is prevalent in a show the viewer is more likely to see it. Now the sweet spot is if you can put your product in the show that your target demographic is watching. It also has to used in the right way by the right people in the show or it could easily be a waste. I remember watching the show "Weeds" on Showtime two years ago, a show that is for people 20+ or so, and the main character plays a Nintendo DS several times in the first season. This was at the time when Nintendo was really pushing to expand the market. What better way than to have a trendy, pot-dealing, single mother of two, lady in her early 30's playing a DS. They found the sweet spot.