Essentially, long range cons. Amazing stuff in there that just makes you go "wow". Essentially, if you can talk the lingo, act like you know what you're doing, and be likable, you can get people to do _anything_.
There are six main attacks that social engineers use according to a book cited in this: Authority, Likable, Reciprocation, Consistency, Social Validation and Scarcity.
I have to admit, it's been getting my duplicitous little mind cranking. What I _really_ want to do is get some people together for one of the traditional "bank robbing missions" in roleplaying, but bend it a little; my premise is simple, but the possibilities are complex.