This is a cool, nifty tool for PDF folks developed by Jake Pietrykowski.
Moonwalk is a free tool for reversing the page order of PDF files.
The tool features page order reversal, PDF document splitting, optional page ranges and automatic page split option.
Additionally, users can split large page count PDF documents into smaller page count documents with or without reversing the page order.
The system requirements for the tool is Mac OS X Tiger 10.4x – Mac OS X Leopard 10.5x.