If you have kids, this is an awesome activity. Interview your kids with the same list of questions each new year and see how they answers change. Check out Amy's Blissfully Domestic blog for a sample list of questions. I like her idea for a self portrait as well.
I'll just let you know, you might want to put down some of your own notes for a 2-year-old. It's hard to get an answer that fits, as evidenced by Karen's answer to "What are your wishes for this year?" The wall.
If you don't have kids, you could do something like this for yourself. The answers might not change as much over time, but it might be fun to look back next year and see that in 2009 I thought my name should be Linda Carter.