Romance Genre Study

Right now I am working on finding books within the Romance genre for a genre studies class and am needing some feedback from the Romance readers in the crowd. I am trying to find one book that does a good job of illustrating a subgenre AND will appeal to non-romance readers. I also want a combination of old and new titles.

Here is what I have right now. Please make comments if you think of additional categories, different books, better books or even just your personal favorite books. There are a few books I have used in other genre studies handouts so I am leaving some obvious choices (J.D. Robb) off the list.

Adventure Romance
African-American - Heart’s Secret by Adrianne Byrd
Category (Series) - Stranded with her Ex by Jill Sorenson
Chick-lit -Lucy Sullivan is Getting Married by Marian Keyes
Christian/Inspirational - Sons of Thunder by Susan May Warren
Classic - Devil’s Cub by Georgette Heyer
Comedy - The Viscount Who Loved Me by Julia Quinn
Contemporary - Bet Me by Jennifer Crusie
Fantasy - Warprize by Elizabeth Vaughn
Futuristic - Driven by Eve Kenin
Gothic - Nine Coaches Waiting by Mary Stewart
Historical - Flowers From the Storm by Laura Kinsale
Interracial Romance - The Color of Love by Sandra Kitt
LGBT - Shining in the Sun by Alex Beecroft
Mainstream - Winter Garden by Kristin Hannah
Medical
Menage a trois - Menage by Emma Holly
Military - Over the Edge by Suzanne Brockmann
Multi-Cultural                 
Novel With Strong Romantic Elements     
Paranormal - Slave to Sensation by Nalini Singh
Regency (Historical) - Marrying the Royal Marine by Carla Kelly
Romantic Suspense - Mr Perfect by Linda Howard
Romantica (Erotica Romance) - Coming Undone by Lauren Dane
Science Fiction - Finders Keepers by Linnea Sinclair
Steampunk - Iron Duke by Meljean Brook
Sweet - Mrs Mike by Benedict Freedman & Nancy Freedman
Time Travel - Outlander by Diana Galadon
Traditional
Urban Fantasy - Lover Awakened by J.R. Ward
Western (Historical) - Always to Remember by Lorriane Heath
Yaoi (highly romanticized gay romance)
Young Adult