Today Mike Schierberl released his varScoper 1.0 tool for identifying variables that haven’t been locally scoped within cffunctions (whether they be in .cfm or .cfc files).
Looks like there may be some slight tweaking for *nix systems or macs, and there is no cfscript support but all in all a great tool. I bet you’d be surprised at how many variables you are using in your functions which aren’t var scoped!
Personally I’d love cfscript support soon :)
View the varScoper page here.