I'm a big fan of blues music. As a matter of fact, I will be headed out tonight to hear my old friend Tinsley Ellis's great blues-rock band. I've know Tinsley for more than 25 years-first in Atlanta, where I used to live. Now that I have been in Portland for nearly ten years, I make sure to catch his band when they come to the great Northwest.

Funny thing. When I go out to hear blues, I tend to drink a beer or two. Although I am not driving tonight, I do know I need to exercise moderation. Which is another good reason to use Blood Alcohol Calculator for BlackBerry.

This $10.99 product ($9.89 for Club Handango members) calculates your blood alcohol content based on ounces, weight, hours, and the percentage of alcoholic content in whatever potion you have been drinking. The software also indicates whether this percentage is high enough to get you arrested for DUI.

Download link below.