Who is the co-star of the current co-president of the Actors Studio in the movie Youth?
Harvey Keitel:  Along with actors Al Pacino and Ellen Burstyn, he is the current co-president of the Actors Studio. Youth (2015 film): Youth is a 2015 Italian comedy-drama film written and directed by Paolo Sorrentino. Youth (2015 film):  It is the director's second English language film, and stars Michael Caine and Harvey Keitel as best friends who reflect on their lives while holidaying in the Swiss Alps.
Michael Caine