Re:Try these (Score 1)

I agree with Ender's Game - Excellent read, Some SF Recommendations...

              Journey to the Center of the Earth - Even after 100+ years a great book which I read at age 9. Decently paced, and one of the foundations of much of the SF written today.

              The Time Machine - relatively short, interesting, and thought provoking, Precursor to one of the best TV Shows out there - Doctor Who.

              Dune - Well written, kinda long, but worth the effort.

On the Fantasy front....

              The Belgariad/Mallorean - By David Eddings, one of my favorites, I discovered Eddings shortly after discovering Tolkein and have reread these books several times, Bonus point is that there are 12 books in the series, It helped me to keep focus when I was first reading them at age 13, and provided reading material for a long time.

                The Riftwar Saga - by Raymod Feist - The first trilogy - Magician, Silverthorn and A Darkness at Sethanon were easy to relate to as a teenager due to the protagonists being teenagers and being forced to overcome many trials and tribbulations throughout the course of the trilogy.

                The Mithgar series - By Dennis McKiernan - Tolkienesque, Early books are fairly short and easy reads, lots of action, and humour to keep it intersting, Books have a central theme which carries all of the way through the trilogy but isn't explicitly stated unti lthe last book.

              and Finally - The Dragonlance novels - By Margaret Weis and Tracey Hickman - Excellent - Action Packed, Good Vs. Evil - Some shades of gray, younger characters to relate to.

Hope these provide a decent smattering for you, Several of the trilogies I mentioned are also available in an omnibus with all or most of the indovidual books bound together.