As some of you already know, Microsoft’s [MSFT] Xbox LIVE online service will be experiencing a major scheduled outage for maintenance purposes at 3:01 AM on Tuesday, June 16, 2009.
The bulletins floating around about it, like from Major Nelson’s site, mention that the outage may be as long as twenty-four (24) hours (!!!), so I know a lot of XBL fanboys are going to start experiencing withdrawal symptoms around hour #1 or so… 
I still vividly remember many of the tumultuous system-wide maintenance windows at AOL for our larger e-commerce applications and online experience. In some cases, before I had created some of the automated build-test-deploy mechanisms that eventually would be responsible for smooth release rollouts, there was a lot of nervousness in the dev pits, as some people would have to be on-hand, “just in case” something went haywire.
Good luck to the XBL ops team… Keep on keepin’ on!
