If you need to crack a password, a fantastic company for breaking passwords is Elcomsoft.
They provide a variety of password cracking tools, including those with distributed capability.
If you need to break an MS Office, SQL, or EFS password, they have tools to to do it.
However their latest news is that they have managed to harness the CPU powers of the NVida graphic cards for their password cracking.
By doing this they have increased the speed of their ability to crack WiFi (WPA and WPA2) passwords 100 times faster than previously possible.
This means that Wireless Networks are 100 times less secure!