Two. 1 to screw it in, and 1 to complain that it's not dark enough.
Two, one to change the lightbulb and another to show one they changed earlier.
Who knows, they never get the house.
None, because they can't change anything.
Just one, but they get extra credits for it
Whole milk because he cares about all the milk and not just the top 1% milk!
IHOP
Two. One to put it in and one to complain that he never screws anything anymore.
I don't know, they're all too busy complaining about this joke.