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
"The way you make me feel, it really turns me on!"
or
To get to the baaaaarber shop
or
With the Florida Keys.
or
The same as a regular year, but with less calories.
or
Five: one to handle the bulb and four to contemplate how David Sanborn would've done it.
or