Google’s never-ending chain of features continues with the newly-minted GTalk support for video and voice chat through GMail or other Google app interfaces.

The new functionality arrives via a browser plugin and requires at least a microphone. People without video capability can use voice chat alone, and people with webcams can video message each other. If one party has a camera and the other does not, video can be transmitted one-way while both use voice messaging.

Coupled with AIM access via your GChat list, this shows that Google is still serious about providing its users with feature-packed products.

Full GMail and app features are supported in recent versions of Firefox, Safari, IE7, and Chrome.