"Trick or treat?", “Hello!”, “Anybody home?” Don’t be surprised if children knock at your door asking for candy. It’s Halloween. Halloween, celebrated on the night of October 31st, is most popular in the United States and Canada but is now celebrated in many other countries, including Vietnam. Joe Fitzsimmons, an English language teacher, photographer, and big fan of Halloween, is here with us today on our weekly Culture Rendezvous to talk about Halloween in the US.