Based on example in JavaScript Ninja - John Resig Nifty little caveat regarding recursive function as a property. Key is to use a inline function

Recursive Function - Function Property

    var ninja  = {
        chirp: function signal(n) {
            if (n > 1) {

                return signal(n-1) + " - chirp";
            }
            else{
                return "chirp";
            }
        }
    };


    var samurai  = {
        whistle : ninja.chirp
    };

    console.log(samurai.whistle(5));