3 rare BIONICLE commercials have been uploaded to YouTube by someone named Pereki. Well, at least I think they're rare. I've never seen them uploaded before this.
Rahkshi Set Commercial:
2004 Titans Set Commercial:
(This has been uploaded before, but not in english)
Visorak Set Commercial:
He also uploaded a Toa Mata Set Commercial a while back, but I think most people have seen it: