Heh, yeah the price is usually the giveaway
The classic pair of Nikon 'pro' zooms are the Nikon 17-55mm f2.8 and 70-200 f2.8 VR. There are also some new f2.8 zooms designed more for the D3 (14-24 & 24-70). The superwide Nikon 12-24mm f4 is also a 'pro' lens I gather, but not quite as tank-like in terms of build quality. A popular Nikon landscape lens is the Nikon 17-35mm f2.8
If you want a good build and optical quality, but not so fussed about the f2.8, then look at the new Nikon 16-85mm VR.
If you're looking for high grade primes, the Nikon 35mm f2, 50mm f1.4, 85mm f1.4, 105mm f2, and 300mm f4 are all extremely highly regarded. For macro use, there's the 105mm f2.8 VR