I strongly agree with Kyle, iFraming Marketo forms will retain all native features while keeping the website's original look&feel.
Most tracking plugins rely on the underlying application, typically a Content Management System, rather than explicitly adding the Munchkin script. That mitigates the risks to jQuery versioning conflicts.
As of October 2013 Marketo is running jQuery 1.8.2. Google runs 1.9.1. The Asynschronous and Asynchronous jQuery Munchkin calls, taken directly from Admin - Munchkin, fail because a different library version is already loaded in the browser.
A very good plugin not actively maintained but still viable is
http://wordpress.org/plugins/marketo-tracker/