Mediamingle is an image search engine and very easy to use even I can describe the whole functionality here.

The mediamingle webpage is divided into 3 parts; top part has a search box with various options, left part shows your image search results and the right part shows the image you select from the results returned.

You can specify the size of the image such as extra large, large, medium, icon and any size. Any size is selected by default. You can further use their filtering functionality.

Mediamingle allows users to rate images and also to download them by clicking the Download Image button present on the top right corner.

Try looking for 'orlando bloom' or 'paris hilton' or just 'background images' to see interesting results.