Summary: Alan Zweibel, Ingrid Newkirk.<br> <br> Comedy legend Alan Zweibel discusses his memoir, "Laugh Lines", looking back at his work writing for Gilda Radner, John Belushi, Garry Sanders, Billy Crystal, and more.<br> <br> PETA founder Ingrid Newkirk talks about her new book, "animalkind".<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br>
