Two. One to change the bulb, and one to write a song about how good the old light bulb was.
or
Maine
or
A pair of Re-Bachs.
or
To get his quarterback.
or
After you die, a leech stops sucking your blood.
or
Eventually a Savings Bond will mature and earn money!
or
50. One to screw in the light bulb and the remaining 49 to guard him .
or
Weeeeeeeeeeeeeeeeeeeeeeeeeee
or
"A complex world demands complex hair."
or
Two. One to screw it in, and one to stab the other in the back and take all the credit.
or