Dr. Dre, 49, is a billionaire and tipping big. He left a $5,000 tip for a waitress at West Hollywood’s Skybar on Thursday. Dr. Dre was having a great time taking tequila shots, chatting with the deejay and taking pictures with fans. Someone who saw Dr. Dre leaving the tip says the waitress was “stunned.” Dr. Dre’s also stopped […]