Overload is an ability available to the Sith Inquisitor at level 4. It knocks back all enemies with 8 meters of the Inquisitor. It costs no force, has a range of 8m and is instant cast with a cooldown of 30 seconds.
This ability is excellent for getting enemies away from the Inquisitor. This function, especially while healing, can give the tank a couple of extra seconds to get the enemies off the Inquisitor. as sith sorcerer, you can spend crew skill points to make this ability to a healing power too, that heals every friend that has been "hit" by overload.