Today is Boxing Day in Canada and elsewhere - a great day for post-Christmas sales.
Upon moving to Canada many years ago, one of the first stories I heard about the origin and meaning of Boxing Day is that this is the day well-to-do people box up the gifts they received but don't really want and give the reboxed gifts to their servants. I doubt this story is completely accurate, but it provides another opportunity to mention re-gifting.
One of the best and most thorough descriptions of Boxing Day was just updated at Snopes, which is an excellent website for checking just about anything.
Since Christmas came on Saturday in 2004, the legal day off for Christmas might be Monday, and the legal Boxing Day holiday might be Tuesday.
One creative on-line merchant began its Boxing Day sale at midnight on Christmas Eve!