I've just finished upgrading the board to vBulletin 3.7.0.
Tons of changes and new features, and to be honest, I'm way too tired at the moment and I really can't be bothered to take the time to go through them all.
Go here and read all about it:
http://www.vbulletin.com/forum/showthread.php?t=249460
Seriously -- do it. There's some really cool new stuff in here, and I haven't even worked it all out myself just yet.