I'm always in the middle of several things; it includes "The History of Middle Earth" by Christopher Tolkien, which is fascinating but a bit of a slow read, somewhat like The Silmarillion. I'm also reading the Shades of Magic trilogy by V.E. Schwab. It's a lighter read than Tolkien history, but I'm enjoying the story and characters thus far. I've finally put the money down, collected all the Malazan books, and will (re)start them after I finish Shades of Magic. I had read(listened) to the first book and enjoyed it, so I'm looking forward to diving headfirst into a months-long reading binge.
Some books that others mentioned I've enjoyed: Geddy Lee's "My Effin' Life", the Dark Tower series (I'm stuck in the Waste Lands and need to restart), and Spin (Robert Charles Wilson). I need to restart that series; I didn't realize he had released a third book. I also loved Tom Clancy back in the day, although the quality fell off quite a bit in his later years.