In short she talks about positive effects video games can and is having on society, and encourages non gamers to play more games as well as gamers to play different games.
Her talks:
http://www.ted.com/talks/jane_mcgonigal_gaming_can_make_a_better_world.html
http://www.ted.com/talks/jane_mcgonigal_the_game_that_can_give_you_10_extra_years_of_life.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+TEDTalks_video+%28TEDTalks+Main+%28SD%29+-+Site%29
The first talk is more interesting but the second one is more recent, and she talks about her recent online social game super better. It's free so give it a try or at least check out how it works, very interesting concept.
https://www.superbetter.com/heroes/23038/activities
If you decide to keep playing it add me to your allies
P.S. she also has written a book if the subject interests you. from what i remember the book is informative but a bit drawn out in length and fluff text.
