George Carlin opens Saturday Night Live on October 11, 1975; Bill Hader hosting tonight Posted on 12/10/2014 by Jessica Hannan Saturday Night Live made its live debut on October 11, 1975. October 11, 1975 - George Carlin hosts the inaugural episode of #SNL. #SNL40 pic.twitter.com/pbmAJzoThN— Saturday Night Live (@...