ESP Training is a new game/application for the iPhone that, were it not for a fantastic connection to Ghostbusters, would be a fairly nondescript app. Lucky for that connection, then!
The game seeks to test your extrasensory perception abilities by asking you to place your iPhone down on the table, guess which shape is being displayed, then pick it up and see if you're right or not.
Your results are tracked over time, just like Brain Age.
The fun in this comes not from honing your ESP skills, but by realising the shapes are the exact same ones used in a scene from 1984's Ghostbusters, meaning you can pretend that every time you get an answer wrong, Dr. Peter Venkman (back off man, he's a scientist) will shock the crap out of you.