How often do you move your refrigerator and clean under and behind it?

My fridge has been leaking from the bottom and my handyman friend said he would try to fix it. I emptied the fridge out this morning and he pulled it out from the wall. What a mess! There was an entire cat's worth of hair under the fridge, and I am not exaggerating. The thing was about 8 inches long and about 3 inches wide. We tipped the fridge over and I vacuumed good underneath it. There was hair sticking to every part of my poor aging fridge. The leaking was not due to the hair though. There was a plug inside the fridge that was frozen over.