Who starred as Buddy in the movie 'Elf'?

Will Ferrell

In what movie does Robin Williams deliver the inspiring line 'O Captain! My Captain!'? Who voiced Detective Pikachu in the live-action 2019 movie? Which famous artist created a series depicting the idealized family Thanksgiving scene titled 'Freedom from Want'? What hormone is commonly associated with stress response? What are numbers with no fractional or decimal parts called?