"If you’ve ever seen this one, you know it’s remarkably impressive when done well. Stand on one side of the room and position yourself so that you’re diagonal to the audience—the closest thing to them should be your back heel. Slowly lift your heels and add some float-like wavering and then gently lift the entire foot closest to the audience off the ground. This will require some practice, but if everyone else is standing, the foot that’s entirely off the ground will block the toe of your other foot (that’s actually keeping you grounded), and you’ll appear to defy gravity."