Naman Ramachandran Jack Giarraputo, the veteran Hollywood executive who co-founded Happy Madison with Adam Sandler, is launching advertising agency Slice Collective at the upcoming European Film Market in Berlin.The company, co-founded with former Lazard private equity executive Abhishek Som, is a full-service creative advertising agency aiming to produce Hollywood-level campaigns for clients around the world.Films that Giarraputo has produced have collectively grossed more than $4 billion at