Restore items from the Trash to their previous location on your Mac
You can restore the original location of a file that has been sent to the Trash very easily. Select an item in the Trash and hit the Command+Delete keys to send that item to it’s location prior to the Trash. If you’re not a fan of keystrokes, try Right-Clicking on the file within the Trash and select ‘Put Back’ from the contextual menu (see screenshot).
This may be Snow Leopard only, but how amazingly useful! You can select many files, or all the files in the Trash if you want, it will put them all back in their original location on your Mac.