EDIT: Offer is down for now.
I've yet to learn how to directly link to some StartSampling offers, like this free Dove Go Fresh deodorant. I've got a buddy who works at NASA programming rockets headed to Mars and when I asked him, all he could offer was a resigned “uh-uh” with an added shoulder shrug. My confidence in ever traveling to space significantly dropped after that conversation.
Here's the actual link – just copy and paste it into your browser.