Playing around with FireFox's __noSuchMethod__ property; all browsers should have this!

__noSuchMethod__.js

var myObj = (function () { 
    var data = {
        products : ["foobar", "bazquirk", "gizmo"],
        services : ["widgets", "other", "last"]
    };

    return {
        __noSuchMethod__ : function (id, args) {
            if (id === 'all_products') return data.products;
            if (id === 'all_services') return data.services;
            if (id.indexOf('_that_start_with_') > -1) {
                var ids = id.split("_that_start_with_"),
                    arr = [], item, i = 0;
                
                if (data[ids[0]]) {
                    for ( ; item = data[ids[0]][i]; i++ ) {
                        if (item.indexOf(ids[1]) === 0) {
                            arr.push(item);
                        }
                    }
                    return arr;
                } else {
                    return [];
                }
            }
        }
    };

})();

console.log(myObj.all_products());
console.log(myObj.all_services());
console.log(myObj.products_that_start_with_f());
console.log(myObj.services_that_start_with_o());