U.S. Cellular Corp. will host a Des Moines casting call for the hit ABC television show "Shark Tank" on July 14 at the Iowa Events Center. Those wishing to pitch their company can arrive at 9 a.m. to receive a wristband, and interviews will begin at 10 a.m. The first 500 entrepreneurs who show up are guaranteed to be seen. On "Shark Tank," entrepreneurs pitch their idea to a panel of potential investors, including Dallas Mavericks owner Mark Cuban. For more information and to apply online, click here.