From Lifehacker:
Here's a great idea for Thanksgiving that won't cost you a penny but will be worth more than you can imagine. StoryCorps has designated this Friday as the First Annual National Day of Listening. On November 28, take one hour to talk with someone important to you, be it an older relative or a friend or neighbor or anyone important in your life. Preserve the interview by recording it in some fashion and make it a tradition in your life to record these types of stories.
The site provides a guide on how best to conduct the interview, and contains tips for correctly setting up your recording equipment (test it first!) to how to keep the interviewee talking. There's also a really great question generator to help you figure out what you want to ask.
Even if you can't participate on Friday, I think this is a great idea and something that everyone should try at some point during the holidays. I don't know about you, but during the holidays, I end up running into people who I don't see at all during the rest of the year, and this would be a fun way to get to know my friends and family even better. But if you do participate, let StoryCorps know!