The physics professor looks like he's right 'out of central casting': his white hair is disheveled, his suit rumpled, and he looks a little lost.
She is still 'casting around for' [='seeking'] someone to watch her son while she is at work.
I was having trouble 'casting on', but I think I have it now.
(..) This is Bilbo. Hello. - Good morning. - Good morning. We're just chatting. We love casting Hobbits. Casting Hobbits is always a really fun casting. Hobbit-type people are really close to their characters. They're really lovely and sweet (..)2012 The Hobbit: An Unexpected Journey