For those of you that are interested in the field of security/pen-testing I strongly recommend the captioned course. It is offered by the makers of BackTrack which is a very popular pen testing tool.
For more information
http://www.offensive-security.com/offsec101.php
The course puts other certs like the CEH/Security + etc to shame. So for example during school you would have read about buffer overflows well in this course you actually do it. You actually open up your debugger and attach the process you are trying to break. You then actually get into assembly as in overwriting EIP doing JMP ESP's etc.
The final challenge is not a crappy multiple choice exam for which you can simply cram or buy a study aid. Instead the exam last for 24 hrs. You basically connect to a network where you find machines you are seeing for the first time. You then have to gain root or NT SYSTEM using the skillz you gained during the course. The boxes are not some lame boxes either.
If you are interested in this sort of thing check it out. If you want more info you can pm me.
The course is the REAL DEAL