Brian,
One can do some really cool stuff with slow or second curtain sync. Just last Saturday DSL712 and I used the technique a lot for a wedding out on Lake Michigan. Properly exposed people in the foreground, blurred cityscape in the background. Same thing could be done for any nighttime portrait where the background and foreground flash need to be balanced.
Nice placement of the 1gig card by the way. ;)
Take care friend.