Mark Ruffalo is Osama Bin Laden. No, we're kidding, but Pennylvania's Office of Homeland Security apparently thinks he's dangerous. According SF Gate, the actor has been placed on Pennylvania's terror advisory list for organizing screenings of a documentary about the dangers of natural gas drilling, 'Gasland.'

"[It's] pretty f***ing funny," Ruffalo allegedly told GQ in response to the news.

The screenings were allegedly arranged by star of 'The Kids Are All Right' earlier this year and allegedly voiced concerns about the practice polluting the nation's water supply.

Watch the trailer for 'Gasland' after the jump!