Huh. Good question, jahwarrior. I do keep track of the phases of the moon, so I am very aware when it's a full moon.

Although I don't experience any changes in sleeping patterns when it's a full moon, I can tell you that I see more people doing weird things around the full moon. And I see more unusual cases at work around the full moon as well.

I don't know if there's any scientific correlation, but it's pretty consistent every month.