You know Spock’s Vulcan salute? This site reports that Leonard Nimoy modeled the gesture after a blessing he witnessed at a Jewish synagogue. It turns out that the sign, done with both hands, traditionally accompanies the priestly blessing in Numbers 6:23-26: “The Lord bless thee and keep thee; the Lord make His face to shine upon you and be gracious unto you; the Lord lift His countenance upon you, and give you peace. Here it is pictured on a synagogue in Essen, Germany: