When I first booted my tablet I really couldn't wait to see how my games looked on it, but it wasn't long before I discovered that applicationdata wasn't shared between devices logged in with the same google account.
So I wrote an application to do just thats, and called it DataSync. It has been working great for myself, so I decided to release it on the Android Market:
https://market.android.com/details?id=com.quintstoffers.DataSync
You can also find it here on androidPIT:
http://www.androidpit.com/en/android/market/apps/app/com.quintstoffers.DataSync/DataSync-Alpha