If you've been waiting to order a Zune, Wal-Mart is now taking pre-orders.  This is the new MP3/Video player from Microsoft, and is supposed to rival the iPod.  Microsoft tends to be hot, and Wal-Mart usually has a reasonable price, so if you want to pre-order for the holidays, that's happening now! 
 
Be sure to keep an eye on sales, because many stores will price-adjust if the item goes on sale during a specific time period after purchase.   For holiday selling (especially toys and electronics!), be sure to check on the stores price-adjustment policy, keep all your receipts in one envelope so you can find them quickly, and check the circulars weekly for items you purchased that may have gone on sale!