These are some great addons for the TS server.

TS overlay
http://www.goteamspeak.com/index.php...y&id=1&item=11

SirReal's multipurpose G15 plugin (Multipurpose plugin for the Logitech G15 keyboard. Small (72kb) and fast executable, doesn't require anything else except the TeamSpeak2 DLL (which is included).)
http://www.goteamspeak.com/index.php...y&id=1&item=20

TeamSpeaker (hopefully added to TS in a later version)
http://www.goteamspeak.com/index.php...y&id=1&item=15

And others