A digital enhancement to your tabletop 3.x or PF RPG game, CritGen! allows you to generate spectacular Critical Hits or equally entertaining Critical Fumbles when the situation calls for over-the-top results.

This app is two for the price of one and keeps a running log of the results so that you can easily reference multiple criticals.

Check out a free web-version of this app at d20pfsrd.com.
http://www.d20pfsrd.com/gamemastering/critical-generator