Secure Linix Distribution?

Colin Winters asks: "I've run Linux for a few years, and have been working on securing my system recently. I've also started looking into OpenBSD because of its security. Are there any Linux distributions with the goal of being secure in a default installation, like OpenBSD is? I think this is an issue that needs to be faced-with linux growing in popularity, there's going to be a lot of boxes being cracked if they aren't secured."