6. Sex, Drugs, and Oil Royalties (Interior Department IG, 2008)
Talk about a scandal: the Interior IG found that employees of the Minerals Management Service (the now-reincarnated agency tasked with making oil and gas companies pony up for billions in royalties) were allegedly involved in an ethical train wreck. The allegations included a manager buying cocaine from an employee, sexual misconduct, conflicts of interest, and—wait for it—snorting crystal meth off of a toaster oven. The IG reports on the incident, unsurprisingly, triggered congressional outrage.
Image of toaster oven by Flickr user prettywar-stl