Last night Bill Clinton and Graca Machel hosted a gala dinner and auction in honor of Nelson Mandela's 91st birthday. Morgan Freeman, Josh Groban, and Keisha Whitaker all told us how glorious it is to meet Mandela in person, as did Jeffrey Wright, who told us "it was like meeting my grandfather." But perhaps the strongest reaction came from Alfre Woodard. "I completely came undone," she confessed. "I was just trembling; not with fear, just with joy and energy. And I think I was levitating." View our Party Lines slideshow for more impactful memories.