wizdl is a .NET utility written in C# that allows you to quickly import and test web services within the comfort of a Windows Forms GUI.

It supports calling complex web services that take arrays and deeply nested objects as parameters.

All you need to do is:

1. Select method to call
2. Edit the arguments to the methods in a property grid
3. Click "Test Method" to view the result

As they say a picture is worth a thousand words - Enjoy!