The document describes 5 different articles: 1. An artificial camera that replaces people's actual mouth expressions with smiling ones from a database of smiling faces. 2. How McDonald's claims responsibility for dyeing the Chicago River green on St. Patrick's Day through promotions of their Shamrock Shake. 3. A new proposed national anthem for Ireland called "Ireland, Ireland!" composed by Neil Hannon and Thomas Walsh of The Duckworth Lewis Method. 4. A gym in Rome called Monti Fitness that prints exercises on restaurant receipts to encourage people to work off meals from nearby restaurants. 5. A Skittles viral marketing campaign for Valentine's Day where they "mobbed