Hi Alex,
I work with Applied Science International
www.appliedscienceint.com and we create demolition simulations for the industry and for television shows like yours. So I also seek the "high profile" demolitions you're talking about. The direction I would point you would be New York. With up coming demo's of Shea, NJ Devils, and Yankee Stadiums and then theres Madison Square Garden... let me know what you find out!