Ten days after the Jewish New Year of Rosh Hashanah comes the holiest of Jewish holidays, Yom Kippur. Known as the Day of Atonement, Yom Kippur officially begins tonight at sunset and lasts until sundown on Saturday. It is a time to reflect on the past year, to atone for one's sins and to ask "the big guy" for forgiveness. For 25 hours, observers are prohibited from bathing, anointing their bodies (using cosmetics, deodorants, lotions, etc.), engaging in "relations," or wearing leather shoes. None of that is particularly difficult in comparison to the ultimate sacrifice of food and drink for the entire day -- after a few hours, it's that which almost makes you want to convert. Almost.