Oh, man, I loved The Guernsey Literary and Potato Peel Pie Society! It was a great book. (Read it last year so it's not on my list.)

Interesting that it's an epistolary novel - told only in the form of letters from one person to another. I haven't read a whole lot of those. One of the latest I remember reading is "Ella Minnow Pea" by (I forgot) which is a book where more and more letters are removed from the permissible alphabet. That sort of thing has a name too but I forgot what it's called.

Anyone else with a good epistolary novel they can recommend?