On the whole I've never quite 'got' Terry Pratchett, but the Nome series and the Nac Mac Feegle books, I do get. They have me chortling away to myself.
As evidence of their appeal, this is my non-reader 15 year old, engrossed in Wee Free Men, which the inimitable, irrepressible Drew Buddie (aka digitalmaverick) has promised to read and release in podcast form. Drew will make the perfect Nac Mac Feegle. Crivens!