The Braindead Megaphone by George Saunders has what I can only describe as a cleansing effect. Most of the essays are so clear, crisp, and interesting that it literally helps clean the white noise out of your brain. His essay on the importance of sentences in fiction should be required reading for all creative writing students. There’s also a ton of funny stuff in the book, including his exploration of the British.
Reading this in combination with Tin House: Fantastic Women is stimulating, energizing, and, hey, fun!