I also have several books going on at once. Currently I'm slowly reading A Song of Ice and Fire series by George Martin (trying to savor them since not all the books in the series are out, and judging by how long it took to publish the fifth book, who knows when the last two will!). I also have Positive Discipline for Teenagers by Jane Nelsen, and Inside Scientology by Janet Reitman, and Mindset by Carol Dweck. Last but not least, I'm re-reading Nurtureshock.