The "Customers Who Viewed This Item Also Viewed" section is also great. A side-effect of Amazon's recommendation engine is that it groups all the unlikely products and humorous reviews together. Here's a gem of a review on the page for the (discontinued) gallon of Tuscan Milk:
http://www.amazon.com/review/RXXPVOUH9NLL3/ref=cm_cr_dp_cmt?...
* Forbidden LEGO: Build the Models Your Parents Warned You Against!
* Hasbro Nerf N-Strike Firefly REV-8
* Balls of Fury (Widescreen Edition)
* Dremel 3956-02 MultiPro Super 1.15 Amp 5,000 to 35,000 RPM Variable Speed Rotary Tool with 77 Accessories
* Art of Computer Programming, Volume 4, Fascicle 4,The: Generating All Trees--History of Combinatorial Generation
* (a bunch more programing books)