Mathias, I read in Modern Drummer and in Steve's bio that his name is actually Stelios Hassapoglou. His legal and real last name is Greek. Also, names have different meanings in different languages. Hass in Hebrew means peace. What's weird is that Hass is actually a common name that is GERMAN. It's Bavarian:
Why Germans would have that as a last name, I have no idea. For an American though, it's not weird. Have you heard of Hass avocado's? The best in the world.
I love the facebook videos of Hass with Manhattan Transfer. Show's how amazingly versatile he is. The shaker groove is SOOO SOLID! Unbelievable.