DiCaprio suits up for the L.A. premiere of his environmental documentary, The 11th Hour. Plus: Hilary Duff, Clay Aiken and more

1 of 16

MAN OF THE 'HOUR'

He may be on the fence about endorsing a presidential candidate in the '08 elections, but Leonardo DiCaprio wholeheartedly supports one cause – saving the environment. The actor proudly stepped out for the L.A. premiere for his new documentary, The 11th Hour, on Wednesday.