(leave your answers in a comment!)
A brainteaser (don’t google the answer!)
You are driving on your way to town A. You come to a fork in the road, each road going to a different town, but you’re not sure which goes to town A and which goes to town B.
You know that all the people from town A tell the truth, while all the people from the town B lie.
There is a man standing there, but you don’t know which town he comes from.
You can only ask him one question.
How do you make it to town A?
Update 14/03/2012 – ANSWER:
Point one way and say “Is that your hometown?” If it’s town A, the truthteller will be truthful and say “yes”; the liar will lie and say “yes” as well. If it’s town B, both the truthteller and liar will say “no”.