Andy wrote:
>
> For a long time I've been bugged about the Food TV shows that
> when the host opens the fridge, the lightbulb is out!

It could be the refrigerator is not plugged in.
It is, after all, a studio set.

My refrigerator hasn't had a working bulb for
years, because water dripping down from the
freezer onto the bulb would crack it
if it was allowed to get too hot (for
example, during defrosting operations).