What are some good Computer science books?

I am going to be a senior in high school and i have taken all of the computer science classes my school offers. I learned java, vb.net and a little python. I was wondering if anyone had some good books that i could read this year to keep up to date and learn more about computer science before i go to college and get a degree in it. They don't have to be about any of the languages listed above but maybe about algorithms or theory's. Or if any one took courses in college what books did they have you read. I read a lot of the for dummies books back when i first started learning now i want some thing more in depth.