a film intended for parents and teenagers 'alike' [=intended for both parents and teenagers]
She and her cousin are 'look-alikes'. [=they look like each other; they look very similar]
a young actor who is a John Wayne 'look-alike' [=a young actor who looks like John Wayne]
(..) Dr. and Mrs. Koothrappali, in all fairness, it wasn't entirely Raj's fault. - This is a family matter, Sheldon. - No, I'm Leonard. Oh. Sorry. You all look alike to us. But he's right, Papa. Listen to him. You, you are the one who ruined everything. Who is it? We can't see. Turn us. Turn us. (..)2007 TvShow: The Big Bang Theory Title: The Grasshopper Experiment Season: 1 Episode 8