I picked up the component cables for the XBox last night (they're different than the ones in that link. It looks more like the Monster Cable version). I must say, they are the highest quality first party component cables for a video game system I've ever seen. They also add the digital optical audio output. For only $20, there's no need to waste a colossal amount of money on the Monster Cable ones.
There's nothing like shooting Jar-Jar Binks with a sniper rifle in HD widescreen 5.1 Dolby Digital goodness.
I've also updated my holiday wishlist accordingly.
[UPDATE:12/16/2004] I took the box over to Dave's last night where we romped on Jar Jar for a couple of hours. He's got a direct view CRT which is inherently sharper than my rear projection CRT and it is definitely quite beautiful. Can't wait to get Halo 2.