Glad someone else recommended Carl Hiaasen - Native Tongue is a favourite of mine, some of his others not so much. I think that maybe as with so many series if you read a couple close together they lose their edge, but spread the reading out and they are a lot better.
I dislike Woody Allens films, but his collection of short stories is pretty much the work of a comedic genius (in my opinion, of course).
The Good Soldier Švejk is a Czech book that is quite amusing - all about how stupid war and the military are.
No idea of the availability of the above in e-format. I suspect that The Good Soldier Švejk is not available anywhere...