I love the effect that a wide angle lens can give, basically because it can take in so much of the scene. In fact, sometimes I feel like I am right in the picture! My favorite lens right now is the Nikkor 20mm f/2.8. This lens can be used very creatively not only for landscapes, but also in portraiture. This type of photography can be tricky and requires much experimentation. My next obsession will probably be a fisheye...hoping I can get one soon!