Which sentence uses parentheses correctly?
Touchdown Taco Dip (the most delicious dip around) is served at every
football game.
(Even if you aren't sure you need this product) you should at least hear my
sales pitch.
Our mayor (who used to be respected in our town is now a sort of laughing
stock to everyone.
Jerome Farling the funniest comedian on the circuit today) is coming to
Washington, DC this fall.