When our brother came to visit us, we decided to take him to The Lounge in the Warehouse District, even though we had not yet been there. It has a very trendy and hip atmosphere. The people that tend to gravitate here are interesting and fun, so it is a great place just to people watch. You do have to dress appropriately, but that just makes it even more of a unique experience. If you haven't yet been there, I would highly recommend it.