Yes, but in all honesty it's only the second series I've ever read. The first was Katie MacCalister's series that started with "Light My Fire" (I think). It's been a while. These are the only series that contain characters that I cared enough to continue reading about.
Favorite Book: No :/ My favorite book is My Sister's Keeper but I'd definitely put Deathly Hallows and Half Blood Prince on the list of my favorite books ever :D