http://blogs.sega.com/sonic/2009/09/24/mario-sonic-winter-wii-dream-events-trailer-trailer-8/
http://blogs.sega.com/usa/2009/09/24/new-gameplay-trailer-for-mario-sonic-at-the-olympic-winter-games/
http://blogs.sega.com/usa/2009/09/24/new-gameplay-trailer-for-mario-sonic-at-the-olympic-winter-games/