Rec Request

Okay my lovelies, I have been bitten by an urge to request recommendations from two authors I know almost nothing about, Neil Gaiman and Terry Pratchett. Now, I have read (and love) Good Omens and American Gods. So, what do the peeps out there in the verse recommend for these two authors? I like the silliness of Good Omens but I also liked the darkness of American Gods. Seeing as I also love Simon R. Green and Jim Butcher, I’m hoping some of  you all out there would have some suggestions. Let me have them! I’ll give you cookies!