Everything you need to know about singing "Shalom Aleichem" on Friday nights! What is the origin of the custom of singing "Shalom Aleichem"? How many times should each line be recited, and why? How do we deal with the philosophical and halachic problem of praying to angels? Should one say "malachei hashareit" or "malachei hashalom"? This and more is explored - in under five minutes! - on The Halacha Minute with Rabbi Ari Enkin (www.rabbienkin.com).