For those who don't know: Hanukkah (or Chanukah) is the Jewish Festival of Lights. The festival begins on the 25th day of Kislev (this year, today, December 26) and is celebrated for eight days. The festival marks the victory of the Jewish Maccabees over the Syrian Greeks, the most powerful army of the ancient world. At the end of the three-year war, the Maccabees recaptured Jerusalem and rededicated the temple where they discovered a single cruise of oil with the seal of the High Priest still intact. They had enough oil to last only a day, but the menorah that they lit miraculously stayed alive for eight days: the miracle of the oil.
For more background see Long Sunday: "The true miracle was that a group of people, against all odds and a far superior military force, rose up and fought off the shackles of oppression ... Their stubborness is an inspiration for all those who seek a better world."