If you configure the form layout there is an option in the available column labeled * Chart.   If you add that to the form and save the configuration when you go back to the form you will have the option to add a report to the form.   It looks like you can add any report that you want.   There are even some options there for modifying the report based on values on the form, although I haven't used those so I don't know how exactly they work.

- Steve