Thanks to TVOverMind (WARNING: Spoilers at the source) , we now know Zac’s guest star appearance episode of the HBO hit show airs as follows:
Episode #75: “Security Briefs”
Debut: SUNDAY, SEPT. 13 (10:30-11:00 p.m. ET/PT)
Self-proclaimed ‘Team Efron’ is the official Facebook ‘Become a Fan’ page for the upcoming Me and Orson Welles. Check them out and help spread the word and generate online buzz about the film! Don’t forget to visit and favorite the MAOW YouTube channel.
MAOW has been added to the film lit for the 35th Deauville American Film Festival. No word yet on if cast members or director Richard Linklater will be in attendance.
Source

Charlie St. Cloud (2010)