Parks and Recreation star Aubrey Plaza has just been cast opposite Zac Efron and Robert De Niro in the upcoming comedy flick Dirty Grandpa. comedy Dirty Grandpa. In other movie news, the cast of Entourage recently shot some last minute scenes at the recent Golden Globes as they spoke in character to actors playing journalists on the red carpet. And lastly, Robert De Niro isn't just set to star in Dirty Grandpa; he's apparently reuniting with Silver Linings Playbook co-star Bradley Cooper in the star's rumoured directorial debut Honeymoon with Harry. — Cover Media