BMI Thoughts

I am perplexed at times by the BMI calculator. I am 6'2" and currently about 195 pounds. I wear a size 36 pants. According to the federal government, I am "overweight" and need to lose several pounds. The BMI calculator defines normal weight as a BMI of 18.0-24.9 (I am currently 25). The craziness is that if you look at the lower bound, wow, that can't be right. According to BMI I could be 6'2: and weigh 145 pounds and be "normal" weight. I can't imagine that -- if I weighed 145 I would look terrible, unhealthy and get blown over by the wind. So that makes me skeptical about the upperbound as well. I'd be interested in other people's thoughts on the accuracy of the BMI. I know a football player, athlete, etc, don't fit within the scale. But my weight isn't all muscle, and I don't know why I would be any different than what the target audience is for the BMI. Does it get less accurate for tall people?