On the ABC reality show "Shark Tank," aspiring entrepreneurs sell their ideas to a panel of potential investors- the "sharks." Beginning tomorrow night, 30 entrepreneurs from Chicago and around the Midwest will pitch their own companies to investors from across the country at the Chicago Venture Summit. ChicagoNEXT, which is chaired by J.B. Pritzker, organized the summit. Pritzker joins Chicago Tonight host Phil Ponce to speak about the summit.