Even with a lot of rodents in the tank, you wouldn't think anything that remarkable would happen inside a hamster house. But it's a good thing the people you can hear in this video were watching these creatures closely because they caught sight of something so strange.
According to Animal Welfarists, the furry animal you can't stop watching in the video is "star gazing." It could be the result of an involuntary tick this hamster was destined to develop, but it may be happy and healthy despite the unusual behavior. We certainly hope so!