PerfectDarkForum.com is all about PDZ (in case you didn't know that already). I just wanted to draw your attention to the site again, it's not nearly as active as GamingVidz, but for those of you members that play PDZ on your 360's feel free to get active in that community as well.
Check em out-
PerfectDarkForum.com
(Yes, I know this isn't really site news, but just thought I'd draw this to everyone's attention)