In 2006, Weigert wrote the screenplay "Force Majeure" und co-wrote "Raising Phoenix" and "Red Sea" with writer Kurt Frey and Volker Engel. He also served as visual effects supervisor on the Canon EOS commercial "Welcome to the Playground". In 2007, he served as visual effects supervisor for Kellogg's and "Tropicana" commercials, and as vfx producer for Cafe FX, working - amongst other projects - on the Hogwarts castle ride film for the new Harry Potter Island of Adventure at Universal Studios Florida.