The best place to hide money? Ask a burglar via Blogging Stocks
Short answer: A Bank.
Other ideas: If you have children, inside a toy. Then put it in a toy box so that a burglar will have to search through all the toys to even have a chance at finding it.
Also, leave decent decoys in obvious places.
Fifteen geek movies to see before you die via Digg
Most of the usual suspects, but nothing by Lucas, not even Empire Strikes Back.
Marv