Speaking about Team Speak, here there is a nice utility for seeing who is speaking and who enters or exits from the channel/server, and displays his name INDIDE THE GAME SCREEN while playing.
Still alpha, and works better with D3D games, but is a nice idea. Works with FB.
Main Page: http://www.qbnut.com/tso/
Example (look in the right part of the screen): http://www.qbnut.com/tso/screenshots/Planetside-DX8-2.jpg
(Excuse me for the size of the pic that posted before. First time I posted an image here :rolleyes: )