Ok, I know there are a lot of posts on this topic, and I am familiar with the two Visualforce techniques for doing this (using an outputField bound to an SObject currency field, and using the outputText value="{0,number,###,##0.00}" ). However, in my use case, I'm trying to display a currency value in the title of a pageBlock:

<apex:pageBlock title="Refund Amount: {!refundAmount}" >

I can't really use the outputText or outputField options here, so I think I need to do the formatting in my controller. The Apex documentation states that String.format(String, List<String>) works "in the same manner as apex:outputText." Has anyone actually used this method to format a Decimal value into a properly formatted currency String in Apex code?