Bruce Wayne/Batman (DVD Featurette):

http://www.dailymotion.com/video/x7jzs1_the-dark-knight-bruce-waynebatman-d_shortfilms

Joker (DVD Featurette):

http://www.dailymotion.com/video/x7jyyr_the-dark-knight-joker-dvd-featurett_shortfilms

Harvey Dent (DVD Featurette):

http://www.dailymotion.com/video/x7jzmq_the-dark-knight-harvey-dent-dvd-fea_shortfilms

Imax to Blu-ray (DVD Featurette):

http://www.dailymotion.com/video/x7k09k_the-dark-knight-imax-to-bluray-dvd_shortfilms

Harvey Dent Election (Viral Marketing):

http://www.dailymotion.com/video/x6vuxy_the-dark-knight-harvey-dent-electio_shortfilms