Usher, former President Barack Obama, Biggie Smalls and Jennifer Lopez are a few A-list names that came up during testimony as Diddy’s jury heard from his former assistants, ex-associates and his ex-girlfriend, Cassie Ventura. Former Danity Kane singer Dawn Richard testified that Usher was at a dinner where Sean “Diddy” Combs allegedly punched Cassie Ventura in the stomach. Kid Cudi was first mentioned in Cassie Ventura’s testimony on May 14, when she said Sean “Diddy” Combs had allegedly gone through her phone at a “freak off” and found an email correspondence between her and the rapper.