Both Courteney Cox and BFF Jen Aniston are headlining upcoming projects about women who go after younger men.Cox, 45, stars in the upcoming ABC pilot "Cougar Town" -- about women in their 40s dating younger men -- and Aniston, 40, recently signed on for the big-screen comedy "Pumas," which centers on two 30-somethings looking for younger guys.Coincidence?"I did know about her movie. I'm not sure exactly what the storyline is other than