Just got the good news this morning, I passed the CISSP exam. Edorsement form has already been faxed, so I should be official in the next few days!!!
What I did to study
Shon Harris all-in-one 2nd edition
CISSP Study Guide 2nd edition by Ed Tittle
Advanced CISSP prep guide by Ronald Krutz
Official ISC2 study guide
Mike Meyer's CISSP passport (more Shon Harris)
Experience got me through at least 20 questions or so that covered things not covered in any of the materials I read above.
Spent some time on cccure.org
Spent some time reading papers on the SANS website (be careful here as some of these papers are written by security professional hopefuls.)
Things I actually did on the job that helped me prepare include,
BIA, set up, created filters for, and tweak snort all the time, disaster recovery planning, security models, BCP.
I stayed away from any exam prep questions until I was confident I knew the material well (or so I thought!!!!!!)

And of course, hung out on this site!!!