1. Dirty Grandpa is a 2016 American comedy film directed by Dan Mazer and written by John Philips. The film stars Robert De Niro, Zac Efron, Zoey Deutch, and Aubrey Plaza.
2. Filming began on January 19, 2015 in Atlanta and ended on May 9.
3. It was theatrically released on January 22, 2016 by Lionsgate. Dirty Grandpa received generally negative reviews from critics and became a success at the box office.
4. The film’s script was featured in the 2011 edition of the Black List, an annual listings of well received but unproduced scripts in circulation.
5. Prior to DeNiro’s casting, Jeff Bridges and Michael Douglas were both considered for the starring role.
6. DeNiro’s casting was confirmed September 4, 2014, along with Zac Efron as his grandson.
7. On December 9, Zoey Deutch was cast as the female lead. Casting calls began in November.
8. In January 2015, Adam Pally and Aubrey Plaza joined the film’s cast.
9. Plaza has said that she was inspired by the role because it was different from the characters she normally played, and was also inspired by the fact that the role let her engage in physical comedy.
10. The cast was spotted filming in Atlanta on January 12, including Julianne Hough.
11. As of February 21, 2016, Dirty Grandpa has grossed $34.6 million in North America.
12. For the film’s theatrical poster, Robert De Niro lifted Zac Efron on his back without any help. Efron confirmed it while promoting the film on Instagram.
13. The screenplay was featured in the 2011 Blacklist, a list of the “most liked” unmade scripts of the year.
14. The Florida spring break beach scene was shot in Tybee Island, Georgia.
15. Jeff Bridges and Michael Douglas were considered for the role of Dick Kelly.
16. Aubrey Plaza, who plays a 21-year-old college student, was 31 when the film was released.
17. Aubrey Plaza, Jason Mantzoukas, and Mo Collins were also in Parks and Recreation (2009).
18. The second time Zac is arrested in the hotel he is fully clothed but the next scene when he comes out of jail he is in a completely different outfit.
19. Zac Efron and Robert DeNiro previously starred in New Years Eve (2011) although they shared no scenes
20. This is the second time Zac Efron has played a character named Jason. The first time was That Awkward Moment (2014).