When ColdFusion 8 added the ability to return data from remote functions formatted with JSON they also added some settings that allow you to put a prefix on the JSON string.

One thing I just realized today - that is a bummer, is that the new types supported by cfparam, and IsValid (eg integer, email, zipcode) in ColdFusion 7 are not supported by the returntype attribute in CFFUNCTION, and not supported in the type attribute of CFARGUMENT. Whats up with that?