A couple of years is fine, and I'd say 5 - 10 entries. I didn't want to clog up (hijack!) the other non-fiction thread.
Some of mine:
Nothing to Envy: Ordinary Lives in North Korea -- stories of six escapees' experiences as told to the author in interviews, great narrative format.
Bayshore Summer: Finding Eden in a Most Unlikely Place -- I'm not particularly interested in science and nature and was hooked!
Love in a Time of Homeschooling: A Mother and Daughter's Uncommon Year -- honest portrayal of one woman's experience.
Inside the Victorian Home: A Portrait of Domestic Life in Victorian England -- excellent reference, focusing on the burden of women.
The Fortune Cookie Chronicles: Adventures in the World of Chinese Food -- well-written combination of both the food, and Chinese immigrant experience.
Good Book: The Bizarre, Hilarious, Disturbing, Marvelous, and Inspiring Things I Learned When I Read Every Single Word of the Bible -- interesting, often funny, look at the entire Old Testament.