Telekinesis, while seeming to most naive players to be useless, can be very good for getting yourself out of bad spots. For instance, if you happen to be in Act II, and have Teleport, if you don't feel like fighting the minions in the Claw Viper Temple, you can cast Telekinesis on the altar from afar, Teleport over, grab the Viper Amulet, and safely cast a Town Portal scroll, returning to town with your quest item. It is also good for picking up gold (if you, like some players, have an OCD for picking up every single speck of gold). It only works on the following: field objects, golden keys, gold, potions, and scrolls.
With this skill, a Sorceress can reach out with her mind and manipulate distant objects. By manipulating the Ether that permeates the world, she is even able to retrieve items out of her reach or send her attacks to distant enemies. Useful to a cunning Sorceress, this spell rewards the quick thinking that makes the most of opportunities that arise.