I've always liked the simplicity and ease-of-use of this little app. Unfortunately, it looks like the developer has lagged way behind on it - nevermind Leopard compatibility, it hasn't really kept pace with Tiger. Hopefully we'll see some activity soon.

Meantime, if anyone can suggest an app that's just as easy (I don't have time to master killer icon creation apps - I just want plug & play and put away) as this one and will default to Leopard folder icons, please post!