How find and install google Video call or google voice with video, or whatever it's called ?

Supposedly, there is a goog app with gingerbread 2.3 that allows for video calling, like skype used to.

Where is this google app (or combination of apps), what's it called, how install, etc.

Your help would be much appreciated.

PS. Tried a forum search, unsuccessful--likely because I don't know what this app is called.