I have more lenses than I need, but my favorite is a Sigma 18-250. It's my walking around lens. I rarely take it off my camera anymore. When we went to Costa Rica, it was the only lens I took. It's sharp, it's fast and it covers a huge range. Sometimes there is some very minor vingetting at the very far end of the range but it's minor and easy to crop out for prints.

I have a Nikkor 60mm Macro lens. It was crazy expensive, but it does take a great shot. I mainly use it for pictures of my beads.

I have the Nikkor 35mm too. It's a great lens. So fast and bright. Nice for portraits and that kind of stuff.