Johnny Galecki boards Niccol's 'I'm.mortal'

Andrew Niccol's upcoming sci-fi flick is no longer titled "I'm.mortal," but I'll keep calling it that until it's got its new official title. The project is still casting, and Johnny Galecki is the latest to board the flick.

The movie is set in a futuristic world in which people stop aging when they hit the age of 25. Time is the most precious currency now, and the rich are immortal. Everyone else is struggling, by the way...

More specifically, the plot follows a ghetto rebel (Justin Timberlake) who is framed for murdering a rich dude and goes on the run with a hostage. They later discover love is more important than anything...

Olivia Wilde, Amanda Seyfried and Cilian Murphy co-star. Heat Vision says Galecki, the star of "The Big Bang Theory," will play Timberlake's best friend, an alcoholic who wastes his family extra time.