Came across this program and I thought it would be useful for those people who are either bored or needed something new to toy with.

Cain & Abel is a password recovery tool for Microsoft Operating Systems. It allows easy recovery of various kind of passwords by sniffing the network, cracking encrypted passwords using Dictionary, Brute-Force and Cryptanalysis attacks, decoding scrambled passwords, revealing password boxes, uncovering cached passwords and analyzing routing protocols. The program comes in two versions because of the differences and limitations of some API.
you can download it here
http://www.oxid.it/cain.html