Hot, because you can catch cold.
or
Take regular water and just boil the hell out of it.
or
1,000,001: One to change the bulb and 1,000,000 to rebuild civilization to the point where they need light bulbs again.
or
"Pint please, and one for the road."
or
None. They just let Marketing explain that "Dead Bulb" is a feature.
or
Pointless
or