Wikipedia entry here:Good Friday is the Friday before Easter or Pascha. It commemorates the crucifixion and death of Jesus at Calvary. This year, it is on April 6, 2007.
Good Friday is a holy day observed by most Christian religions. Special prayer services are often held on this day with readings from the Gospel giving accounts of the events leading up to the crucifixion. Mainstream Christian churches view Christ's crucifixion as a voluntary and vicarious act, and one by which, along with resurrection on the third day, death itself was conquered.