I usually read two books at the same time - one fiction, one nonfiction. I keep a running file of "summaries" of all the books I read and post them on FB for my book reading friends so they can see whether they would like to read them or not.
My current reads are: How Emotions are Made: The Secret Life of the Brain by Lisa Feldman Barrett (nonfiction) and The Dream Lover by Elizabeth Berg (a fictionalized account of George Sand).
I love mysteries and cut my teeth on Agatha Christie - some current mystery writers I like include Louise Penny, Tana French, Lawrence Block, Dennis LeHane, and Kimberly Chambers.
Like many that have commented, I've read tons of books of true crime and forensics as well as all of the Kathy Reich's series of the fictionalized forensics cases.
Since I was born way back in the mountains in southeastern KY, I'm intrigued by stories set in Appalachia. Some of my favorite authors of this genre are Sharyn McCrumb and Lee Smith. One of the reasons is they are among the very few who get the dialect correct. I can't stand books that mess up the dialect because they feel like an uncomfortable assault on my mother.
My nonfictions range from politics (love Peter Schweizer and Sharyl Attkisson's work) to behavioral economics, to brain research, to sociology/psychology, and, of course, history.