Because it was a chesnut tree.
Cleaver! EDIT: Also Sharp, knew about this one but I like Cleaver better.
Seven - one to actually change the bulb and six to complain that they liked the old one better.
Dill or No Dill
Close encounters of the nerd kind
A tree.
Put it in the oven at three fifty tree fiddy until it's Bill Withers. Edit:summoning happened.
