Bill Watterson, the reclusive creator of the hugely popular comic strip Calvin and Hobbes which ran from 1985 to 1995, has come on board for a documentary on the art and evolution of newspaper comic strips. In fact Watterson was so pleased with the project that he supplied the art work for the poster of the film 'Stripped', the New York Times reported.The comic strip Calvin and Hobbes is about a mischievous and imaginative boy and his beloved tiger. Dave Kellett and Fred Schroeder, the co-directors, interviewed more than 70 cartoonists, the NYT reported."In the right hands, a comic strip attains a beauty and an elegance that really I would put against any other art," Watterson said in his interview. NYT quoted Schroeder as saying that "It seemed like he really wanted to express some thoughts about comics and cartooning, where they had been and where they are going."The co-directors plan to release the film in various digital platforms as well as sales of a DVD, which will have extended footage of the interviews. 'Stripped' will be available for advance ordering on iTunes and on April 2 the DVD will go on sale, the NYT reported.