This request does not only require knowledge of how to hook functions in TB to third party programs, but also how to use growl or similar on OSX; I would like to request a implementation/addition to TB, standing as a lone application that 1) Alarms you when its your turn to play with a growl message (or similar), 2) Alarms you when a game has ended in the room you're in (with a growl message), and 3) Alarms you when you have been whispered in-game (with a growl message, including a copy of the message).
I'm not sure if this is something that is actually possible, and neither am I sure of how much modification of the TB files it would require if it would require any such methods, and finally if it then would be "legal"...
But I am sure that I would use it, and that most OSX players also would, as sometimes you/I miss the icon-bounce in the dock.