“Tropic Thunder” scribe Justin Theroux has signed to produce the Paramount comedy “Air Guitar,” a story of ‘’the competitive (in an ironic sort of way) world of imaginary licks and very real scissor kicks’’, says The Hollywood Reporter.

Mike Lisbe and Nate Reger have signed on to pen the script about the pic, set in the world of air-guitar competitions and featuring the colorful characters who participate in them. “Enchanted” producer Barry Josephson will join Theroux in producing.

‘’Guitar” was originally set-up at Dreamworks. It came to Katzenberg’s pad several years ago, with Ian Roberts and Jay Martel attached to write the project, which was based on the 2006 comedic documentary “Air Guitar Nation” and a book, “To Air Is Human,” written by one of the colorful figures from that pic, Dan Crane, who plays under the name Bjorn Turoque (of course he does).

Theroux, also an actor (he appeared in "Mulholland Drive" and "American Psycho"), doesn't plan on acting in the pic.