Heat transfer, Cold vs. Hot

If you boil water inside a pot the outer rim bubbles first, I imagine because its hotter. Does that same concept apply for the inside of a refrigerator for example. Is the outer rim always more extreme, or at least at first?

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because heat leaks mainly through the door crack--No, its because we keep opening the fridge every three seconds :P. Seriously though: Great answer, you may want to expand a bit on nucleation. Also there's the issue about heat transfer requiring a temperature gradient, which is another explanation for this (there is a T difference at the metal-water interface, but the water has a small T gradient) –  Manishearth Mar 31 '12 at 11:17