The amount of information they think they can get on you from your handwriting is astounding. Hell, some graphologists even advertise the ability to catch cheating spouses. That's right, you can pay someone a ridiculous amount of money to analyze that sexually explicit note your girlfriend wrote to the gardener, and they'll tell you whether the way she crosses her T's indicates unfaithful tendencies.
From top to bottom: rapist, car salesman, Hitler.
Graphologists claim to have near foolproof methods to determine who's an alcoholic, who will be violent, who will steal and, in one especially bizarre case, a graphologist actually offered to identify potential child molesters working within the school simply by studying writing samples.
Add that to your cheat-sheet for a successful job interview: dress neatly, do your research and for Christ sakes make sure your handwriting isn't too rapey.