Charlie Sheen's memoir was full of celebrity name-drops - but some were more impactful to his life than others. His famous father, Martin Sheen, and brother Emilio Estevez were among the stars named in The Book of Sheen, which was released on Tuesday, September 9. Some of Sheen's former costars, including Jennifer Gray and Alan Ruck, were also mentioned. The Two and a Half Men alum referenced friend C. Thomas Howell, and there was one line about Tom Cruise in the book as well.