Drain Knowledge You can drain specific memories, relating to a single subject, from a victim's mind. This allows temporary access to this knowledge. This is much easier when performed on a sleeping/unconcious being. It will take roughly 5 minutes to take the knowledge from a victim and you must be in contact with them for it to work.
Force Drain Also from Jedi Knight, this was Jerec's trademark. Simply put, a Jedi can suck up a certain amount of Force energy from a victim, leaving the victim helpless.