I just ordered a childhood favorite of mine from Amazon "Sideways Arithmetic From Wayside School" by Louis Sachar.
Any other fans out there?
+2. and if you like Louis Sachar (rhymes with cracker), check out his book Holes (Fiction).
For the sports-pop-culture-humor enthusiasts, Bill Simmons' "The Book of Basketball: The NBA According to the Sports Guy" is a must.