Sarah Hyland, Holly Hunter, and William Hurt also star
Selena Gomez, The Band Perry, Psy, Carly Rae Jepsen and more
We also learned about Derbel McDillet, CW genetics and 'Beverly Hills Cop'
Liam Hemsworth and Sam Claflin also hit film festival to talk up sequel
Also: Scarlett Johansson and Robert Downey Jr. reuniting in Jon Favreau's 'Chef'