If you want a good all-around lens, the Nikkor AF-S VR 18-200 is a good bet. I have one, and it's great for distant subjects.
All in one lenses are nice because you can get a wide range of focal distances in one lens, but they tend to be a bit weak in their performance compared to more dedicated lenses, especially in the ends of the range.
I was considering the 18-200 but I decided on a 70-300 vr instead, for about the same amount of money, to expand my telephoto range, and I'll get an 18-100-something later