Compile .NET in your browser using Compilify(blog.appharbor.com)

    c = document.createElement("canvas");
    document.body.appendChild(c);
    ctx = c.getContext("2d");
    ctx.translate(150, 75);
    ctx.beginPath();
    for (var i = 0; i < 60; ++i) {
        var a = i * 2; 
        ctx.lineTo(Math.sin(a) * 75, Math.cos(a) * 75); 
    }
    ctx.stroke();

   xxx = someObjectIWantToInspect

    m = 2;
    c = document.createElement("canvas");
    document.body.appendChild(c);
    ctx = c.getContext("2d");
    ctx.translate(150, 75);
    setInterval(function() {
        var t = +Date.now();
        ctx.clearRect(-150, -75, 300, 150);
        ctx.beginPath();
        for (var i = 0; i < 60; ++i) {
            var a = i * m + t; 
            ctx.lineTo(Math.sin(a) * 75, Math.cos(a) * 75); 
        }
        ctx.stroke();
    }, 100);