I find that the best way is to be right. Which is why I go after creationists, and people of that ilk. There's a distinct feeling of smug satisfaction to be had from pointing out that they literally cannot tell one end of a fossil from the other. Even if its got a skull on the bit they think is the "tail".

Of course with creationists its really hard not to do 1 and 3, because they are very often so profoundly ignorant, and aggressively arrogant.