I read Harry Potter and the Order of the Phoenix in six and a half hours...
The Discworld books are excellent! I have read quite a lot of them, and love them and Terry Pratchett's style. I'd say my favourite character is Death.
One thing I love is his 'simplistic' style of writing, such as the way people speak being very matter of fact as in real life, and how he actually writes "Um" in their speech! He is a master of humour.