A list of the most useful shortcuts available with Google Talk. Good luck with it!
F9: Open Gmail to send an email to your buddy
F11: Start a call with your buddy
F12: Stop the current call
ESC: Close the current window
ALT + ESC: Minimize the current window
TAB: Switch between multiple chat windows
CTRL + I: Same as TAB
SHIFT + TAB: Same as TAB but in reverse order
CTRL + TAB: Same as SHIFT + TAB
Windows + ESC: Open Google Talk (if it’s minimized, or in the tray)
CTRL + Mousewheel up/down: It will change the font size in a conversation window.
CTRL + E: Center text
CTRL + R: Right justify text
CTRL + L: Left justify text
CTRL + 1: Single spaced lines
CTRL + 2: Double spaced lines
CTRL + 5: 1.5 Spaced lines