A few days after Thanksgiving, chef Keith Guerke made the rounds of some local television morning shows in Illinois and Wisconsin to promote his book full of recipes for Thanksgiving leftovers. The thing is, Guerke's book didn't exist. The chef was actually comedian Nick Preuher of the Queens-based Found Footage Festival who managed to trick seven TV stations into inviting him on to demonstrate his recipes, which included mashed potato ice cream cones and a smoothie made of cranberries, pumpkin pie and turkey.