Animation / Tk?

All,

       I've seen the examples for embedding matplot lib in Tk and the Tk animation example. However I've not yet been successful with creating an example where i can both animate data and stay in control of Tk. (The animation in tk example seems to lock the mainloop.) Does anyone have any advice or a quick example of a Tk app with an animated graph that doesn't lock the user out of Tk control?

Regards,
Kenneth Miller