No, aluminum foil won’t work! You must use anti-static plastic. 6 mil Velostat works best, you’ll need a minimum of 8 layers. You’ll also need lots of duct tape, too.
Train a doberman to attack.
BTW, if you haven’t noticed, the human body does have a small electrical current.
I’m afraid I must disagree. Consider the trouble you have dredging that thing out of your head that is just at the tip of your tongue. Now consider scanning and cross-referencing the contents of six billion minds.
This is not a matter of “just gotta have an efficient filing system”. Information theory states that accessing the data associated with this many minds is simply more complex, on the order of (let us say we can organize it at least on a tree structure) two orders of magnitude complex. Not as bad as six billion, but not great.
I would say that any such plot would use a triggered hypnosis, induced away from physical proximity, and then having a number of assassins who trigger when they are reasonably close, with hypnotic suggestion against telepathic control. Given sufficient training, it should give them enough time for one or two to get a shot off (remember that controlling a large number of minds is just as complex as listening to them.)
Send Dan Quayle or George Dubya after him. 
As Boris Badenov of Rocky and Bullwinkle once said, “No brain, no effect!”
If the telepath has so much control as to be able to distinctly read AND control all of the minds within a certain radius, the best way to stop him would be to kill him while he sleeps.
If his area of effect is not large enough to account for the entire planet, a long range missle launched, or at least triggered to be launched, from out of his range should suffice, as would sending in an unmanned fighter plane controlled by someone out of his range.
Even in this realm of imagination, I find it very hard to grasp any explanations as to how one person could command such power and control so as to be able to read EVERY mind all of the time. This telepath would have to be of alien origin or be some kind of altered human. No “normal” human could ever hope for that level of mastery.
Roger Zelazny, in Isle of the Dead actually describes hand-to-hand combat with telepath Mike Shandon. In this case, the telepath could only sense, not control, and Zelazny makes the point that knowing that someone is trying to kill you is not much help if you can’t prevent it.
By the way, the extension of telepathic communication to telepathic “mind control” is often made in SF, but IMHO is pretty unlikely. If it is compared to other forms of communication (which is arguable, I know) then telepathy would be no more coercive in your behavior than a persuasive speaker would be.
Speaking of telepaths, I believe that Bester’s ** The Stars My Destination ** is the first to bring up the concept of someone who gets the unlucky half of the communications package and can only send, not receive. Gully Foyle actually finds a use for Robin’s abilities, but it’s pretty damn rare in the rest of SF.