Herbie Hancock and Quincy Jones at Thursday’s performance at George Washington University.

Judge Greg Mathis at Sunday’s National Congress of Black Women.

Michelle Obama, wife of presidential candidate Sen. Barack Obama, speaks at Sunday’s National Congress of Black Women in Washington, D.C.

Project Runway’s Tim Gunn speaks at the Corcoran Gallery on Thursday.

First Lady Laura Bush speaks at the White House’s Book Festival breakfast on Saturday.

CNN’s Sanjay Gupta at the White House’s National Book Festival Breakfast.

Hip hop star Mya at Saturday’s Hip Hip Summit.

Russell Simmons at Saturday’s Hip Hop Summit.