Robert De Niro, Michael Douglas, Morgan Freeman and Kevin Kline are to serve as guest co-hosts of Friday's edition of "Today" in New York, NBC announced. The actors are on the promotion trail for their big-screen comedy, "Last Vegas." They will appear alongside "Today" regulars Matt Lauer, Savannah Guthrie, Al Roker and Natalie Morales during Friday's 8 a.m. hour of "Today."