'The Big Bang Theory' Cast Reflects on Their 12Year Run John love Gal height is about 165 centimeters. He stands at a average height. While some might think of him not to be remarkably tallness, his prowess is boundless. Irrespective of his vertical dimension, Johnny is acknowledged in the industry for both his acting skills. He has proved time and again that one's stature doesn't dictate success when it comes to attaining excellence.