One of the most legendary manga artists from shonen jump has a freaking USTREAM account!! Yusuke Murata, artist of Eyeshield 21 and OnePunch Man has a Ustream and records daily 3 hour videos of him working!!! Of course you don't have to watch the whole video but just seeing him work is amazing! He has videos of him doing OPM color spreads and pages from the actual manga! Go check him out now!!!