The podcasts mentioned by Salgueiros (Philosopher's zone and Philosophy Bites) are both good. As for critical thinking from a humanist point of view, try
The Skeptics Guide To The Universe ("Your escape—to reality."). Dr. Steven Novella and his band of skeptics go a long way toward teaching logical thinking and using logic to dispel much of the woo-woo thinking that is so ubiquitous in the media today. As a plus, James ("the Amazing") Randy is a frequent guest.