The U.S. chairman of EY, the former Ernst & Young, speaks at the 2019 USC Leventhal School of Accounting commencement.

The novelist and psychologist spoke at the USC Dornsife College of Letters, Arts and Sciences commencement ceremony.

The preacher, author, producer and motivational speaker addresses the 2019 USC Marshall School of Business commencement ceremony.

The businesswoman and USC alumna speaks to graduates at the 2019 USC Marshall School of Business commencement ceremony.

The legendary dancer speaks to the first graduating class of the USC Kaufman School of Dance.

The director of the Los Angeles County Department of Public Health addresses new graduates of the Keck School of Medicine of USC.

The actor and former NFL player speaks to the 2019 USC School of Dramatic Arts commencement.

The NBC News business correspondent addresses the USC Viterbi School of Engineering commencement.

Our photographers share some of their favorite images of a memorable day.

At the Keck School of Medicine of USC commencement Saturday, the late night host has words of thanks for the entire medical profession — between jokes.