Only one, but the light bulb really has to want to change.
Just one. He holds the bulb and the room spins.
Q: How many Canadians does it take to change a lightbulb
One to drop it and six to pick it up pick it up pick it up
One after reflecting in the twilight on the merit of the previous bulb.
Because they are both surrounded by nuts.
One, but the light bulb has to *want* to be screwed in.