Suspense:
All of Tom Clancy books
All of John Grisham's legal thrillers
Fantasy:
Anne McCaffrey's Dragon Rider series
Piers Anthony's Xanth series
Marion Zimmer Bradley's Darkover series
Young Adult:
All of Eloise McGraw's books
All of Gloria Whelin's books
All of Shannon Hale's books
Christian Fiction:
The Left Behind series
Piercing the Darkness and This Present Darkness by Frank Peretti
NASCAR Fiction:
Turn Four by Tom Morrisey
St. Dale and Once Around the Track by Sharon McCrumb