We now have a Minecraft TeamSpeak server. Download from teamspeak.com. The MineSpeak connection info is 126.96.36.199:1337 (server address). Put that info in the quick connect box accessed from Connection -> Quick Connect. Nick registration is open, and all servers are welcome to have their own channel. Enjoy!
PS – TS is also cross-platform, unlike Ventrillo, etc. So there’s your reason, don’t ask me.