Good light-hearted fantasy book or series
Just like the title suggests, I'm looking for a good light-hearted fantasy book or series to delve into. It doesn't have to be traditional fantasy; modern or mixed with elements of sci-fi is fun, too.
In the past, I have enjoyed much of Piers Anthony: the Incarnations of Immortality and the Apprentice Adept series, as well as the first dozen or so of the Xanth books. I also enjoyed the "Magic Kingdom for Sale" series by Terry Brooks.
I'm sure there are others, but I'm not thinking of them at the moment. Anyway, if anyone has any suggestions, I'd love to hear them!