I can literally zoom in and look the contents of my apartment patio. You can also rotate the images and see your house from different angles by clicking on the compass.
You have three viewing options: Road, Aerial and Bird's Eye. The Bird's Eye is by far the most impressive. You can also use the mouse wheel to zoom in and out. This also has the drag-and-move functionality like Google map, only you are limited in how far you can go in the Birds Eye view, so if you want drag-and-move very far you have to switch to Road or Aerial view.