Funny, engaging writing

I have a horrible attention span, so maybe I shouldn't be reading books at all. But please recommend fiction to me that smoothes the read along with jokes and cliffhangers and basically just keep you glued to the page. Examples -

Anything by Douglas Adams
The Red Dwarf novels

There are the only two I can think of right away. The books don't have to be sci-fi, but it would help if they didn't care too much about adhering to reality.

>>9

Thanks ... let's pretend I didn't say anything about attention spans and get back to the topic of funny, engaging writing.