[dvdvol] Customs declaration

Is anyone else having to complete the customs forms? I was told I had to do one today on a package to Canada. I have never been told anything about this before by the Postal Service people. Now I am wondering if any of the DVDs or CDs that I mailed without Customs forms have reached their destinations. I suppose I should fill them out regardless just to be on the safe side. Any thoughts or ideas from the group? Don Arnold