These are nice shots, esp. for a new DSLR owner right out of the box. For moon shots, you need a really long reach, at least 200mm on the telephoto end, and even then you will have to crop like crazy to get a large moon. But I agree that the 55-200mm VR is a good zoom lens to have for wildlife and some decent moon shots.
Also, consider a prime lens down the road, the Nikon AF-S DX Nikkor 35mm F1.8 G was just released and is excellent.