Tom Hanks is using his Twitter.com page to give fans a sneak peak into his next movie Larry Crowne - he's posted a photograph showing the actors he's cast in the lead roles.

The Big star has been hard at work on the comedy, which he will star in and direct, and has sneaked several pictures of the set to his virtual followers on the social networking site.

Now, he's given away his biggest clue yet by posting a snap of his office's "Casting Wall," which features his own headshot next to those of George Takei, Taraji P. Henson and his former Charlie Wilson's War co-star Julia Roberts.

He's also recruited Wilmer Valderrama, funnyman Cedric the Entertainer, Bryan Cranston and Holmes Osborne for the project, which is due to begin shooting in April.

Hanks will star in the film's eponymous role as a middle-aged man who is forced to find a new career.