I am not Jewish, but I have a few personal observations.
The body must be buried within 24 hours. The body must be in a complete state (whenever possible; there is a semi-famous photo of young rabbis-in-training on their hands and knees with tiny metal scoops colecting human remains after a car-bomb in Isreal). Attendees of the grave-side service may each fill the grave with a spade full of dirt.
Pre-edit
Actually I found a good site that has a ton of details. Very interesting and moving actually.
http://www.religionfacts.com/judaism/cycle/death.htm