Roseanne's Johnny Galecki, who can be seen in the fall sitcom The Big Bang Theory, has just become a publicist to superheroes. That's right, according to Variety, the comedic performer will act as Will Smith's right-hand man in the upcoming Peter Berg Comedy Hancock.

The film follows an alcoholic, out of work superhero who is having relationship problems. Smith will play the hero. Jason Bateman will be playing one of Johnny Galecki's co-workers on the publicity circuit, and Charlize Theron will be playing Bateman's wife.

The film is currently filming in the Los Angeles area.

Hancock was released July 1st, 2008 and stars Will Smith, Charlize Theron, Jason Bateman, Jae Head, Eddie Marsan, David Mattey, Maetrix Fitten, Thomas Lennon. The film is directed by Peter Berg.