I went through a stretch back when I was in middle and high school where I ate up everything I could find by him. Jurassic Park was the first book I read that had hundreds of pages and no pictures. IIRC that was 7th grade and I was 13. After that I tore through Sphere, Eaters of the Dead, Congo, Rising Sun, Terminal Man, and Andromeda Strain.
I stopped reading his stuff around Disclosure, probably too adult oriented for me at the time and I didn't get into it.
Maybe I'll go pick up one of the more recent ones and give it a look.