How often do YOU move YOUR stove?

I can't believe I'm actually posting this! About a week ago we had USA Insulation come out to put insulation in about 4 walls that we hadn't redone ourselves. They needed to plug their pump into a 220 outlet and the stove was the easiest place to go. Since they had not told me this BEFORE they got there they got to see the disgusting buildup under the stove. I think it's only been about 2 years since we moved it and cleaned good. So THIS is what we found! Yuck! Who would ever let anything in their house get so cruddy? Shudder.

This is what it looked like within 10 minutes of pulling it out! The 2 marks still on the floor are burn marks. (Don't ask)