What happened to console.log in IE8?

If you get "undefined" to all of your console.log calls, that probably means you still have an old firebuglite loaded (firebug.js). It will override all the valid functions of IE8's console.log even though they do exist. This is what happened to me anyway.

Check for other code overriding the console object.

if (window.console && 'function' === typeof window.console.log) {
    window.console.log(o);
}