For those of you who aren't familiar with the author's other works, it's worth taking a peek at his other books. I can whole heatedly recommend Pearls of Functional Algorithm Design http://www.amazon.com/Pearls-Functional-Algorithm-Design-Ric... It's a good cross between two other excellent books: - Jon Bentley's Programming Pearls http://www.amazon.com/Programming-Pearls-2nd-Jon-Bentley/dp/... and - Chris Okasaki's…
Seconded! Also, I'd highly recommend "Introduction to Functional Programming using Haskell" by the same author. This was the book that set me forth on the path of FP during post graduation. Though, professionally, I've been programming in Java for close to a decade now most of the FP principals have held me in good stead.
[edit] Preface says "The present book is a completely rewritten version of the second edition of my Introduction to Functional Programming using Haskel" so my recommendation is moot.