If you ever need to move your Angry Birds high scores, star counts and golden eggs to another iPad there is a way! Get the free iPhone Explorer (works with iPad too) and copy these files to your Mac (all 5 of the files in the Angry Birds Documents folder):
• Apps > Angry Birds > Documents:
Connect your new iOS device and replace these same files. (We successfully tested from iPad to iPad. We're not sure if it will work from iPhone to iPad).
Just did this from iPhone 4 to iPad. Worked fine. Squee!