yes
Youtube
youtube ^^
You could try YouTube but 4Kidstv is the best and free place to watch it. I think they have all yugiohs.
youtube
All (or at least almost all) yu gi oh episodes are on youtube
on youtube.
at 4kidstv.com
on youtube
4kidstv.com
youtube go to the 4kids channel
I watch them on Veoh.com
Hulu.com