When John created the NYC CNC Machining and Prototype Shop back in 2007, he started a video blog documenting the successes and failures he learned while mastering the art of machining. His latest project is a fun combination of many aspects of his work—CAD, machining, fabrication, powder coating, Raspberry Pi, electrical engineering, and programming—and his love of dogs. John used all of those skills to create an interactive automatic treat dispenser !
E-mailing email@example.com  activates a treat dispenser which gives John's 2-year old Vizsla, Judd, a cookie. The program also takes a photo of Judd and sends a thank you e-mail in return. John's project became so popular  that Google temporarily disabled Judd's original e-mail address due to high volume. Fortunately John runs with Judd anywhere from five to 30 miles a week, which should help to offset the frequent treats. The machine is also turned off at night and at other times of the day when John and Judd are busy.
If you'd like to create your own high tech treat dispenser, John made his venture an open sourced project, meaning that the Python code and CAD model are available for free on his web site. Very cool!