USBShow is cross-platform software that runs right from the stick on Macs, Windows, and LInux. Nothing is installed on the computer.
No more "Oops - he's on a Mac and I'm set up for a PC."
Drop dead simple to use, just put it on your stick, and then drag your photos on to the stick. Nothing at all to configure. "It just works."
Never worry again about whether or not your stick will work with their machine. Less than $10 for a lot of peace of mind.
NOTE!!! This product ONLY runs from a USB stick. It will not run properly from your hard drive!