I am unsure what's favourite movie of Leonardo Dicaprio but I will write the names of movie I saw from beginning to end, i.e. What's eating gilbert Grape, Shutter Island, Titanic, Romeo & Juliet, Catch me if you can, Django Unchained, The Departed, Orphan, Poison Ivy etc.
He maybe a good person but it's difficult to say for certain unless you know him personally and he might be a womanizer since he has had affairs with numerous women, that's something I dislike about all the big celebrities.
He never looked bad for sure. He used to look younger than his age to me like a kid.
His mother is German, his father his half german, half Italian. He speaks German fluently.
Perhaps you should read his Wikipedia page.