JOAQUIN PHOENIX - PHOENIX MADE FUN OF DUVALL 'NON-STOP'

JOAQUIN PHOENIX shocked his co-star MARK WAHLBERG on the set of new movie WE OWN THE NIGHT - by mercilessly making fun of veteran actor ROBERT DUVALL. No subject was off limits for Phoenix when it came to mocking 76-year-old Duvall, including his baldness. Wahlberg says, "Every day I'm telling Joaquin, 'Hey, be quiet!' "He called Duvall a dinosaur, he said, 'Look at your head - it's peeling!' He was non-stop." And Duvall admits he got annoyed with Phoenix on a couple of occasions, although he still thinks the 32-year-old is a "great guy". Duvall says, "I got really ticked a couple of times."