It has taken me quite a bit of time and research to find all of these resources so I thought I would try to save you some time. If you are a production DBA you will probably recognize a lot of them. If you are a system admin or dev and find yourself occassionaly wearing the dba hat, I think these will help point you in the right direction and help you find some of the best information that is available. As always if anyone has any recommendations I would love to hear about them.
These are all books which I own and have read.
This is a pretty comprehensive list of the blogs I follow.