Photoshop: Quick way to remove a background in a jpeg?

[Xstr8guy]

I use the magnetic lasso in photoshop and then clean up the edges with a 3pt or 5 pt eraser (depending on the amount of clean up that needs to be done.. typically when I am close to skin, I use the 3pt eraser). Then when I do hair, I use the smudge tool with a 14pt star tool and set at 85%. Then I just trace the outline of the hair and clean it up with the Healing Brush.

Rocky

Is there a way to replace areas that were accidently erased with Photoshop? Is that the 'healing' brush?