Since no one was killed, it's okay to gawk at this surveillance video recording (Amazingly, not a YouTube clip) of the gas explosion that completely demolished the townhouse on 62nd Street. In New York City, real estate is practically pornographic. People obsess over it and fanatically write and blog about it. When a studio apartment that is the size of a closet costs more than houses in most markets, the obsession--sometimes voyeuristic--with real estate in NYC is understandable. So, for some real estate buffs, watching the building explosion must have been like watching a snuff film.