Hey! What part of NJ? I live in Central NJ.
Yes of course the shores. Do you like roller coasters? You might want to hit up Great Adventure (Six Flags). On the weekend, Englishtown has an AMAZING auction/flea market (
EAS: Fleamarket, Outlet Center, Farmers Market, Arts, Craft, Antiques & More!).
My favorite beach is Seven Presidents Beach. Its REALLY clean and you can bring your own food and everything.