I just finished reading The Four Loves by C.S. Lewis (thanks to Mark Del Rosario for lending it to me!).
I thought it was such an insightful book. =)
I agree with you, Ben, when you said that sometimes it could actually be hard to read him because he speaks in such a sophisticated level.
On my end, I thought that his writing voice is very distinct. On one hand, there's definitely a certain age that's present in his tone (the book I read was written in the 1960's, if I'm not mistaken), and yet even then, his voice also holds a certain playfulness to it. (I don't know if it's just me though). =)
Anyway, C.S. Lewis is definitely one of those authors that ensures you a good read, no matter what the title may be. =) Whee~!