Idunno if it was this thread (or a different one), but I remember someone posting an idea about changing Yavin IV into Alderaan, to save it from being blowed up by the Deathstar.
I want to know who posted it, etc.....for no particular reason. :D
EDIT: If I don't get an answer, I give all credit to George Luca$ !!!!!!! ......lol, I am soo evil. ;)