Chess diagram software

What software do people use in chess videos when they highlight squares and draw arrows?

Found this: http://uscfsales.wordpress.com/2011/04/19/using-graphic-commentary-in-chessbase-11/

Green square – hold down the ALT key and single-click on a square

Yellow square – hold down the ALT and CTRL keys simultaneously and single-click on a square

Red square – hold down the ALT and SHIFT keys simultaneously and single-click on a square

Green arrow – hold down the ALT key and drag the mouse from square to square

Yellow arrow – hold down the ALT and CTRL keys simultaneously and drag the mouse from square to square

Red arrow – hold down the ALT and SHIFT keys simultaneously and drag the mouse from square to square

SCID can do this.  You might look at zoomit too

http://technet.microsoft.com/en-us/sysinternals/bb897434.aspx

http://scid.sourceforge.net/