One of the silliest creationist arguments is that there's no such thing as a beneficial mutation. Even if we get them to admit that there is, then they make the argument that in order to get a beneficial mutation, they have to do damage to themselves.
This is obviously falsified by nylonase, and now, is falsified by a new species of bacteria that can metabolize hairspray.
Both of these discoveries come from the Japanese. Shame that things coming from Japan tend to go right over the heads of Creationists, who still think Pokemon is actually how evolution works.