Best known for his role as sex-machine private detective John Shaft in the 1970 film Shaft, Richard Roundtree is proof that breast cancer affects men, too. Roundtree discovered a lump in his right breast in 1993 and received chemotherapy, radiation treatments and a mastectomy. He has acted in a number of TV shows and films, including the 2000 Shaft remake, starring Samuel L. Jackson. Roundtree, 68, is now a breast cancer advocate, working with the advocacy group Susan G. Komen for the Cure to raise men's awareness and encourage early detection.