Have you read the Virgo documentation, especially "Creating an Application with Virgo", and tried the Greenpages sample in conjunction with the documentation?
Some other samples are available, but we have not yet built and distributed them because they seem less useful than Greenpages. See the list of source repositories for samples. Do any of those samples look helpful to you?
What kind of sample did you have in mind? Is it for someone who is new to OSGi or new to Java EE or new to everything?