I have used many hacks
I have had to resort to sam crackers, using the login.scr to obtain a command prompt with administrator rights to use the net user x ***** trick. Used Knoppix to get data off. If i come accross a password protected startup. I flip the jumper. Network. Believe it or not i changed my password so a helper could help install software on our machines. and forgot it. Used a brute force program and ran a dictionary attack as I had set it to a word for him to use. Just to name a few of the hacks I use