This week (Nov. 14-20, 2011), more than 25,000 organizations in 123 countries will host events celebrating entrepreneurship and connecting entrepreneurs to potential mentors, inventors, collaborators and peers. Global Entrepreneurship Week (GEW) activities include Startup Weekends, in which groups come together to create a new business in three days, startup competitions and showcases, social entrepreneurship forums and venture capital summits. First organized in 2008 with support from the Kauffman Foundation, GEW activities have spread around the globe and will this year include the participation or support of U.S. President Barack Obama, UK Prime Minister David Cameron, Israeli Prime Minister Benjamin Netanyahu, Canadian Prime Minister Stephen Harper, and many other international heads of state.