Brian Smith is a Project Server Suppor Engineer in Washington. He has an excellent blog over at http://blogs.msdn.com/brismith/. Brian started this blog back in October of 2006. Since then he has covered topics such as Project Server SDK, What's new in Project Server 2007, Running Project Server in mixed environments, Backup and Restore, and host of other important topics around Project Server.
Brian and the rest of his team are very closely connected to the Project Server development team. The information that Brian shares is top notch.
If you are interested in Project Server or are currently running Project Server, then this is a great blog to watch on a regular basis.