How to print a ReportViewer's report without showing a form

I have a sample that does this posted on my blog here: http://blogs.msdn.com/brianhartman/archive/2009/02/27/manually-printing-a-report.aspx

The LocalReport object can be instantiated independently of the ReportViewer control and used directly in the sample code attached to that blog post. Or you can pass in ReportViewer.LocalReport even if you don't first display the report in the UI.