The following presentation was given at DICE 2010 by Jesse Schell, university professor and game designer. While Part 1 and Part 2 are both worth watching, I especially recommend Part 3 (see below), where he introduces the phenomenon of gamification and envisions a commercialized future, where TVs will probably track your eyeballs and reward you for watching ads. Schell suggests that gamification could actually help people to lead better lives, but only if they are designed and implemented in a thoughtful and ethical manner.
Interesting research article on the future of gamification done by PEW Internet: http://www.pewinternet.org/~/media//Files/Reports/2012/PIP_Future_of_Internet_2012_Gamification.pdf