We have written before about the no love lost between superautomatic espresso machines and oily, dark roasted coffee beans, but when we got a machine in the repair center last week that was caked to the gills with coffee cement, we just had to film it and show you what we're talking about.

Watch Gail take apart the grinder of a Saeco Vienna superautomatic espresso machine and show what happens over time to the internal grinders on these machines if someone is using super-dark and oily beans. We definitely recommend sticking with a lighter, drier roast for the long term health of your machine -- and now you'll see why!