I HAVE A LOT!
For military lovers or for action junkies: I love books by Stephen Coonts. My favorites by him are Liars & Theives and Deep Black: Jihad and my favorite by far is The Intruders
A good book for tweens that I used to love like hell, and I still flip through the pages is the Wolf Star series by Tanith Lee My favorite book out of that series is Wolf Queen, which I believe is the third installment. it's shorter than Twilight series books, but I think they've got much more substance to them.
For animal lovers, I'd recommend two books: The Loop by Nicholas Evans and Wesley the Owl by Stacey O'Brien. The first one is kinda a modern "Day in the life of" type story, and it centers around the lifes of a ranching town and the wolves that they think are coming much too close to their cattle. It gets a little saddening at times, but overall it's a great, great book. The second one is a real-life biography about the relationship between an owl and it's care taker.
For Scifi/fantasy lovers: The Lake House BY JAMES PATTERSON. I don't have any idea what any other book or movie by that name is, this is the only one that matters to me. IT INVOLVES MUTANT HUMANS WITH WINGS. ALL I'M GONNA SAY. READ IT. Another is Neverwhere by Neil Gaimen. It's kinda a modern "Alice and Wonderland" that takes place in London. It's kinda dark and has adult tones in it in some places, so by warned. Also, I love the book Snow Crash by Neal Stephen, which is kinda a futuristic, cyberworld. It's wonderfully written, and it's one I read when I can't sleep. A good fantasy book is The Looking Glass Wars, by Frank Beddor. It's a take on the Alice in Wonderland story, but it seems a little more realistic in my opinion.
For modern, I suggest Cobra Event, by Richard Preston, which is an awesome, AWESOME book that will attack your brain like a virus and make you want more! Also I suggest The Last Time They Met, by Anita Shreve. It's an interesting tale, and it's one of the few books that made me cry.
I also suggest Stephen Kings' Tommyknockers. Which literally scared the fuck out of me when I was done reading it. It's a good, haunting book.
For those who liked the book Kite Runner, the author, Khaled Hosseini has another book called A Thousand Splendid Suns.
And I'm going to end this on an odd note, I don't understand Christians very well. But I started reading a book called Moral Choices by Scott B. Rae. It's helping me understand a lot of their views, which, before I read it, I just outright was confused on. It's a christian viewpoint on many of the daily issues, like medical care, same sex relationships, money, guns, the death penalty, genetics and science, radiation, and animals. One of the things I learned the most about from this book was the christian viewpoint on Abortion.
Don't get me wrong, I still disagree with a lot of their views, but now I understand them a little better. It's an interesting read.
*Pants for breath*