From a smiling valedictorian to Oprah to will.i.am, take a look at some of our favorite moments from an unforgettable day.

Featured speaker Siddhartha Mukherjee — famed oncologist and Pulitzer Prize winner — offers graduates a word of advice: listen.

The musician and entrepreneur joins in the celebration of 30 problem-solver students who break the traditional mold.

“Show up, do the work, get your hands dirty,” the media mogul tells a captivated crowd at the school’s commencement ceremony.

USC 2018 valedictorian looks to the past for lessons that will inspire the Class of 2018 in the future.

The renowned oncologist and Pulitzer Prize winner has a word of advice for this year’s graduates: Listen.

USC’s baccalaureate speaker — a philanthropist and fashion designer — discusses the importance of mentoring and how that affected her role as Beyoncé and Solange’s mom.

USC Annenberg’s David Craig and a colleague argue that regulation of content on social platforms must not stifle new voices and perspectives.

The USC School of Cinematic Arts’ Interactive Media & Games Division and the USC Viterbi School of Engineering’s Department of Computer Science join together for the first-ever event, which drew more than 1,000 visitors.

The June 12 summit in Singapore between President Trump and North Korea leader Kim Jong-un marks the first time heads of state of both countries meet for talks. At stake is national security for both sides, regional stability in east Asia and economic relations with China, the United States and its Pacific Rim allies. USC experts say the two leaders will enter uncharted waters.