Bearfort Ridge loop on the west side of Greenwood Lake in Abram S Hewitt State Forest.
Point Mountain, in a Hunterdon County park near Washington, NJ.
Mount Tammany in the Delaware Water Gap itself. Frequently crowded but well worth it. Longer version follows fire road along the ridge to Sunfish Pond.
Jenny Jump State Forest, in Hope, NJ, has a nice ridge walk loop and views.
Sourland Mountain -- another Hunterdon/Somerset County Park that is not too far from a brewpub in Lambertville, NJ.
Apple Pie Hill, in the Pine Barrens. Views from all 210 feet above sea level. (Has a fire tower, too.)
Forked River Mountain, also in the Pine Barrens. This one offers a good navigation challenge, and more good views.
Why these? Well, they all offer great views, some measure of solitude at the right moments, and are much more "wild" than one would expect of New Jersey. And these are the obvious ones! I'm not divulging the really wild spots...
How's that?