https://www.youtube.com/watch?v=sfJS5TWo1G8&feature=youtube_gdata_player
(talk1)
https://www.youtube.com/watch?v=UyAswFT-BQo&feature=youtube_gdata_player
(talk2)
https://www.youtube.com/watch?v=2bAd6zHp5k4&feature=youtube_gdata_player
(talk3)
https://www.youtube.com/watch?v=m_RZmw9NXP0&feature=youtube_gdata_player
(so today 대결..?ㅋㅋㅋ)