Just as the title says, how can I use messenger or any chat client while i'm watching video in browser with full screen? I can use gtalk when watching youtube video in full screen in Windows, but can't figure out how to put chat window on full screen video using alt-tab.
In Ubuntu just Right-Click on the Title Bar of the Chat Client window and select the option "Always On Top". The Window will now remain on Top of all other Windows so you can Fullscreen a Video and still continue to chat.
EDIT: Oh I see. The problem here is Flash. Flash puts itself on top of everything else no matter what. The only way around that is to not use the Flash Player's Fullscreen button but instead zoom in on the player while it's still in the browser window. In Firefox