Screenshot command or Hotkey?

if I'm overlooking something and this is already in the application itself, or someone has already posted about this, disregard this.
Taking screenshots with the Prnt Scr command gets tedious after a while. I swear, the application should have this. As far as I'm aware, it doesn't. Personally, I want to be able to toggle between taking screenshots with and without the HUD on screen.
Discuss?

For Mac Users its:
Command-Shift-3: Take a screenshot of the screen, and save it as a file on the desktop
Command-Shift-4, then select an area: Take a screenshot of an area and save it as a file on the desktop
Command-Shift-4, then space, then click a window: Take a screenshot of a window and save it as a file on the desktop
Command-Control-Shift-3: Take a screenshot of the screen, and save it to the clipboard
Command-Control-Shift-4, then select an area: Take a screenshot of an area and save it to the clipboard
Command-Control-Shift-4, then space, then click a window: Take a screenshot of a window and save it to the clipboard
=) I use Command Shift 3 and Command Shift 4
I'm on a Mac, and I use fn-F12 to get to the function key instead of the "make the volume louder" key (first I had to go to System Preferences -> Expose/Desktop and unbind F12, which was being used for... something, don't remember what). That way you don't need to crop out the window title.
Although those commands are nifty, I didn't know those!
If you use F12 it will save it on your desktop. About the others im not sure exactly what they do :p
F12 is the screenshot button.
Pictures are saved onto your desktop.