Know New Mail notification in TitleBar

I'm often doing something on my computer and want to know if I have new mail without having to keep my Gmail window open. But if you keep Gmail minimized or in an inactive tab sometimes all you see in the browser title bar is something like "Gmail - Inbo..."

New feature to Gmail Labs called Title Tweaks that changes the order of the elements in the browser title bar to put the more important things first. Once you turn on Title Tweaks from the Labs tab under Settings, your browser title bar will display something more like "Inbox (3) - Gma...".
That way you can see how many unread messages you have even if the window is minimized.