Everyone’s favorite caterer, The Hamburger Man, will be grilling patties from 1 to 2:30 this afternoon at 9246 Sunny Brook Lane. This five-bedroom house on a 4-acre lot in Old Preston Hollow has been listed by Mark Cain for $10.6 million. The estate features a children’s playhouse, a tennis court, a four-car garage, a second home with 4,000 square feet, and two guest houses. And, today only, it features free burgers! Stop on by!