Amazon ups the ante again for Black Friday sales. You can now pre-order deals that will be available on Black Friday November 27th. Amazon has for instance announced in their deals calendar that a Nintendo DSi with 5 pre-installed games will be on sale on Black Friday. You can actually pre-order this Nintendo DSi deal ($154.98) right now and it will ship on Black Friday. It even comes with pre-order price guarantee in case Amazon offers it at an even lower price.
This way you can make sure you get this deal before Black Friday, when everybody else orders it.
More details about the DSi deal are available here.