The thing is that I don't have a specific genre I would consider outside my comfort zone. Even though I have my favorite genre, I have pretty much read and loved something from every single genre (with the exception of graphic novels). I think the type of book that comes closest to something I don't suavely enjoy involves the classics. Maybe it's the language or the fact that there is not a lot of action, but I don't read a lot of them or enjoy a lot of them (with the exception of Jane Eyre.
This is a list of the top classics I would love to read, but I am too intimidated to read. (All of these books are on my Kindle, so hopefully that will mean my chances of actually reading these one day are pretty high.)
1. Anna Karenina by Leo Tolstoy
2. A Tale of Two Cities by Charles Dickens
3. Sense and Sensibility by Jane Austen
4. Emma by Jane Austen
5. War and Peace by Leo Tolstoy
6. The Age of Innocence by Edith Wharton
7. Walden by Henry David Thoreau
8. Great Expectations by Charles Dickens
9. Moby Dick by Herman Melville
10. The Adventures of Tom Sawyer by Mark Twain
Are there any classics you are too intimidated to read? Any on this list that you love?