Zac Efron is proving he is more than just a pretty face by starring in and producing a new comedy for Warner Brothers. The High School Musical star, who set up his production company Ninjas Runnin' Wild with manager Jason Barrett, will be working on an untitled workplace comedy with the team behind box office hit 17 Again, according to The Hollywood Reporter.

The script has been written by Jason Filardi, and Adam Shankman and Jennifer Gibgot are in talks to come on as co-producers. Zac is also looking to start work on a number of projects at NRW including Art Of The Steal, based on a Wired magazine article about a master thief, and time-travel story Einstein Theory.

There's also Fire, based on the Brian Michael Bendis graphic novel about a college student recruited to take part in a special CIA training program, and Snabba Cash, a remake of a Swedish action thriller about a young man who becomes a runner for a drug dealer.

Zac's next big screen outing will see him playing the title role in fantasy-romance Charlie St Cloud alongside Kim Basinger and Ray Liotta.