Barry Stevens is a Toronto-based filmmaker, screenwriter and former actor. He is also, in his words created "by science and not by sex". He is the child of sperm donor. Not just any donor however, but Dr. Bertold Weisner, a physician who ran a fertility clinic between 1943 and 1962 and is alleged to fathered 1000 children via sperm donation. So far, Barry has met roughly 100 siblings. He documents it in his new film World's Biggest Family.