​From Wikipedia, the free encyclopedia. Mark O'Keefe is a comedy screenwriter for feature films and television. He wrote and produced the 2003 film Bruce Almighty, starring Jim Carrey and the 2006 film Click, starring Adam Sandler. O'Keefe resides in Los Angeles. His brothers are Broadway and movie songwriter Laurence O'Keefe (also called Larry), composer and lyricist of shows like Bat Boy: The Musical and Legally Blonde: The Musical; and Seinfeld writer and producer Daniel O'Keefe (also calle ...