Wodehouse rec.s?

I just picked up Mulligan Nights at the library's used book sale, and enjoyed it (read through it completely in the hour it took to get my car serviced).... which, in my normal obsessive-compulsive fashion, means that I'm now thinking about picking up any other P.G. Wodehouse books. Does anyone have any recommendations on which books to hunt down avidly (or conversely, is there anything I should avoid like the plague)?

-Lydia