Awww, I love Jurassic Park by Crichton... and definitely don't feel guilty about loving it!
My guilty pleasure book is Season of Passage by Christopher Pike. I loved his YA books growing up, even though they were predictable (and now they're unreadable, except for his Last Vampire series, which I also love). This book was one of his first "adult" books, and I still LOVE it. I've just about worn out my copy and wish I could find it as an ebook.
I
also like Bon Jovi