Since I posed the questions, I should probably also answer them, right?
I usually read almost any genre of book when it comes to YA though I am less inclined to read three-hanky reads or romance titles. I'm also getting a little weary of fantasy stuff though I still ready plenty of it -- I'm just getting more picky because the market seems so over saturated with it right now.
Some of my favorite YA authors include: Scott Westerfeld, Nancy Farmer, Lois Lowry, Francesca Lia Block, and John Green. Some selected favorite titles include: Looking for Alaska by John Green, The House of the Scorpion by Nancy Farmer, The Knife of Never Letting Go by Patrick Ness, The Absolutely True Diary of a Part-Time Indian by Sherman Alexie, The Outsiders by S.E. Hinton, and The Book Thief by Markus Zusak.
Aside from reading YA, I also like to read adult fiction and nonfiction. I'm even more picky about my adult fiction because I spend most of my time working on YA. I love culinary nonfiction. I love fictiony memoirs and offbeat fiction.
Some of my favorite adult authors are: Margaret Atwood, John Irving, and Haruki Murakami. Some recentish favorite adult books include: In the Woods by Tana French, A Prayer for Owen Meany by John Irving, Cat's Cradle by Kurt Vonnegut, Stitches by David Small, and The Brief Wondrous Life of Oscar Wao by Junot Diaz.
From my to be read pile, I have a number of teen books I think would be excellent for discussion including: The Forest of Hands and Teeth by Carrie Ryan, Hate List by Jennifer Brown, If I Stay by Gail Forman, Shiver by Maggie Stiefvater, Once Was Lost by Sara Zarr, Tales of the Madman Underground by John Barnes, The Wicked Lovely series by Melissa Marr, Beautiful Creatures by Kami Garcia and Margaret Stohl, The Maze Runner by James Dashner, Mockingbird by Kathryne Erskine, and The Mysterious Howling by Maryrose Wood (tho this is admittedly more a children's book than a teen book).
I think that I would prefer four week cycles to two week cycles unless we select a book that's particularly short. That's just my opinion.