I came across this site while reading a Technology blog that I frequent. JeopardyLabs allows you to create a customized jeopardy game without using PowerPoint. The games you create may then be played online from anywhere in the world. They have a simple editor to assist you in building your own jeopardy template, too. If you are not interested in building your own, you can check out the templates created by others. Best of all it's Free, and no registration is needed! Check it out!