I read Nightlight, which is a parody of Twilight. It didn't made me laugh much. It twisted the story a little, but I think The Hunger Pains is better. The next book I am going to buy and read is Bored of the Rings. I'll check out Mogworld when I can get it.
Personally i think the discworld books are brilliant, and there is a good thirty of them. They all made me laugh out load. The man is a genius. If i was new to the books i guess i would just start at the beginning with "the colour of magic". Hope this helps
I am now reading Bored of the Rings by the Harvard Lampoo. The writing is kind of weird. I think the authors were also making fun of J.R.R Tolkien writing style. Plus none of the story parody makes sense.