Indie actor Mark Ruffalo says he found himself on the Pennsylvania Homeland Security office's terror watch list for organizing screening of an oil-drilling documentary.

According to the World Entertainment News Network, Ruffalo -- who has starred in such films as The Kids Are All Right, Eternal Sunshine of the Spotless Mind and Zodiac -- told GQ magazine he found it "pretty f--cking funny" that he would be suspected of terrorism for raising the alarm about what many say is an environmentally harmful way of drilling for oil and gas.