SGPTV The Sponsorship Group for Public Television helps corporate sponsors make their mark with millions of desirable public television viewers — viewers who know what they like on TV and value the companies that make it possible. SGPTV’s comprehensive national program inventory is television's best, from WGBH Boston — public TV's #1 producer— and a few select premier production partners. SGPTV is the exclusive representative of this prestigious inventory: public television prime-time cornerstones such as Masterpiece Theatre, Nova, American Experience, and Antiques Roadshow; children's favorite Arthur and hit do-it-yourself shows like The New Yankee Workshop, The Victory Garden and Simply Ming.