Former archbishop of Cape Town and Nobel Peace Prize-winner Desmond Tutu attended today's memorial for Nelson Mandela, but did not speak. But he led a lively tribute Monday evening to honor his close friend. After the fall of apartheid, Tutu headed the country's Truth and Reconciliation Commission. He is now 82 years old. The intimate gathering where Tutu spoke in Johannesburg was hosted by the Nelson Mandela Foundation.