Warning - security related post. Stay clear if you feel disgusted from Windows Internals and Security.
A friend of mine just posted a great piece about a clever shellcode technique called egghunting. If you're into this kind of stuff, I recommend reading it.
Also, if anyone is interested in some more details about the Adobe Acrobat Reader vulnerability described in the above post, please leave a comment, and I'll dedicate a separate post for that.