I don't actually do the hacking because my business (and reputation) is to guard against it (with a 100% record over 8 years) so its not in my interest to do so lol. Its not rocket science though, there are tips around if you want to google it and have the time to be arsed doing it. Generally, the easiest way is an email hack, which is usually time consuming but once ya there, the FB element becomes as easy as 1-2-3 most of the time. Failing that, it gets a bit more complicated, like a backtrack wifi hack and inserting a keylogger etc... I know of a few people that have had their FB accounts hacked, often as a result of silly errors on their behalf.
There is plenty of scriptkiddies around, who could do the job in seconds!! And the scary thing is, they probably arnt even out of school yet!