Ooh one other point.
The wireless connectivity of the 360 for streaming is great.
Though the XBox and 360 also allow ethernet cabling connection options. I thought the DS required you to use wireless. Personally I will never play games over a wireless connection - the delay is just too high. Sure there is no noticeable lag visually but it is there. It is like the difference between a 100ms ping and an 18ms ping in Counter-strike. You can't detect it visually but it really affects your performance. The fact is that wireless networks are just really lossy and it will just get worse as they proliferate. The radius of these things can be pretty high so as more people get them you'll get interference from your neighbours, their neighbours, the guy parked out in your street using your connection if you didn't secure it properly. Ethernet is the only thing games should be played over if there is the option for it.
Of course if the DS allows to play using ethernet cable then I talk it back. Of course who am I kidding there's no way you'll ever be able to play high precision games like Counter-strike on that screen anyway.