With the early morning announcement that DoubleClick's Ad Exchange Network is now available in Google's Content Network, you should be very excited. Now there are even more sites involved and based on my experience with DoubleClick's network, I'd assume that there are some new high quality sites.
What this means for you is that if you were running a Google Surge, you should now go back and ask your Google Reps for an updated site list. If you had been using Google for placement targeting against certain demographics you should now go update that list.
I'm thrilled. This gives you more reasons to shift dollars to Google where you get good placements with great targeting and reporting, all with competitive prices via at worst a credit card where you get maximum flexibility. This already makes a great product, even better.