Although Episode 3 was posted Monday night, and it appears on other podcast directories, it's not showing up on iTunes! I've e-mailed the folks at Apple to see what's up. In the meantime, you can download it directly from familyanatomy.libsyn.com. In iTunes, you can click on Advanced -> Subscribe to Podcast and enter http://feeds.feedburner.com/familyanatomy. That way, you're subscribing directly to the feed, rather than getting it from the iTunes store.
UPDATE: After pinging iTunes manually a few times, the new episode now appears.