While this is not concerned with typical still photography, Proshow has uploaded their latest show depicting masking capabilities within Proshow Producer. This will require the download of their Presenter plugin (http://www.photodex.com/downloads/go_presenter...free download. Works on the Windows platform only.

The link below should get you to the masking depiction, if you are interested.

http://www.photodex.com/sharing/spot...s_masking.html