iChat AV: AUDIO CHATTING? DROP IT TO THE DOCK

If you're doing an audio chat, do you even need the iChat window open, just cluttering up your screen? Well, if you close it, you'll quit the chat, but if you minimize the chat window to the Dock instead (press Command-M), you can continue your chat, even though the window is no longer visible. When it's time to end your chat, just click on the minimized chat window in the Dock.