Who played Andrew in 'Whiplash' (2014)?

Who played Paul Atreides in 'Dune' (2021)? Who played Barbie in 'Barbie' (2023)? Who played Ken in 'Barbie' (2023)? Who played Sebastian in 'La La Land'? Which actor won an Oscar for playing the music teacher in 'Whiplash'? In 'The Social Network', which actor plays Mark Zuckerberg? In 'Top Gun: Maverick' (2022), which actor plays Rooster? In 'Rocky', what is the name of Rocky's girlfriend and later wife?