The Maverick Philosopher has linked to a London Telegraph article listing the stupidest laws, by category. My favorite British one: It is illegal to die in the houses of Parliament. My favorite foreign (i.e., non-British) one: In Ohio, it is illegal to get a fish drunk.
Fortunately, I was living in North Carolina the last time I did that.
A very close second: In Indonesia, the penalty for masturbation is decapitation.