If you are looking for some great young adult series, here are some that I've really enjoyed, but aren't very famous--yet.

The Dreamhouse Kings series, by Robert Liparulo. Awesome, action-packed adventure mystery series. The old house the Kings just moved into has secrets. And it will do whatever it can to keep it that way. Each book ends with a cliff-hanger, so watch out. 6 books in all.

Guardians of Time, by Marianne Curley. 3 books. A single town that contains an eternal war for the history of the world. A group of kids are the only ones who can stop the forces of Chaos from changing the past...and therefore save the future.

The Wind on Fire, by William Nicholson. 3 books. Adventure series that takes place in a different world. The first one is great, but the other two weren't as good.

Midnighters, by Scott Westerfeld. Another action adventure mystery set in a small town. 3 books. A clever concept: what if there was an extra hour in the day that only a few people knew about? Everyone else freezes except for these people. And, once again, they have to save the world from evil forces.

Dominion Trilogy, by Robin Parrish. 3 books. A man wakes up to discover he isn't himself anymore. He finds he has become part of an elite group that has special powers. But nothing is as it seems. (And I mean nothing!) Awesome trilogy.

Looks good but i have no credits :(

I absolutely loved the Wind on Fire trilogy. The quality of the writing is great and the story sucked me in. It was better than many of the adult fantasy series I have read.

I recommend The Alchemyst, The Magician and The Sorceress all by Michael Scott. The Necromancer is the fourth book in the series, but it is not released yet.

To many books, to few credits!

The Alchemist was good, but I haven't read the others.

Michael Carroll has a series Quantum Prophecy. The first one is The Awakening. Really, really good, but my library doesn't have the rest. I'm not sure how many there are. It's another superhero-type story, except this one involves children.

Michael Grant's book Gone was also a good read. Very interesting concept. The second book in the series, Hunger, just came out recently, but I haven't picked it up, yet.

I loved Gone, but I didn't know a second book came out. Now I'm going to want it right now!

I also liked the Alchemist. I've read the second, but not the 3rd.