I rarely reread books but Fool on the Hill is an old favorite; first read when I was 19 or 20, loved it, reread a couple of times in my 20s. Matt Ruff became a favorite author and I've read and enjoyed most of his subsequent novels.

I decided to reread Fool again (after enjoying Tomorrow, and Tomorrow, and Tomorrow) and what a difference 30 years makes! I still love it and would still recommend it to aspiring writers, but it's definitely an artifact of the 80s, and definitely a first novel.