oweneades said:You don't need a HDTV though. Just get a VGA cable (~£15) and hook it up to your pc monitor, bang there you go HDTV quality without the cost.
I am slightly confused with your comment on COD2. Yes it looks better on the pc (well it does on mine at least) but the gameplay / playability is identical. (I have it on both systems)
But to look its best, the 360 needs a HDTV (and remember that there are currently 3 differing stds of HDTV) and when run on a normal TV looks less attractive than at1600x1200 on a CRT or decent TFT monitor.
For me COD2 just felt less accurate (probably the mouse Vs controller thing) and less playable, not sure why but it did for me.