537 West 22nd Street, Chelsea In his various collaborations with actors, directors and other media producers, Christian Jankowski has generated some stimulating and enlightening friction. But he doesn't manage to do much of this in his latest show, his first in the main space of the Friedrich Petzel gallery. One problem is that two of the three main works are essentially one-man affairs masquerading as team efforts. Another is that their topics are drawn from the art world - rather, "art discourse" - which doesn't give Mr. Jankowski much room in which to operate. Standard institutional critique isn't really his style, but that's what he's up to here. For the title piece, "Discourse News," he had Annika Pergament, the NY1 business anchor, deliver a "report" in which she expounds on Mr. Jankowski's definition of art and implicates herself as a participant in one of his projects. At first it's a little bit disconcerting to hear an outside authority deliver lines like "the artist problematizes the discourse between the media and the general public." But the relentless artspeak quickly dispels the illusion of newsroom-style candor at the anchor desk (as does a disclaimer posted on the wall). In the main gallery the installation "Review" consists of a scattering of wax-sealed glass bottles, each containing a text commissioned from an art journalist or critic. The idea of art commentary as a desert-island enterprise seems more cynical than romantic, possibly an artist's fantasy of revenge against his critics. And even if that wasn't Mr. Jankowski's intention, the terms of his project effectively silence the invited writers (who received signed photographs of their bottles afloat in the East River in exchange for participation). The third work, the film "The Eye of Dubai," is more promising. In it Mr. Jankowski and a team of cameramen are blindfolded and guided through Dubai (all while being trailed by the BBC, which made its own documentary on Mr. Jankowski for its Collaboration Culture series). The premise is odd and occasionally infuriating, but as the men bumble around a jewelry store, an art gallery, an indoor ski park and the top floor of the Burj Khalifa, Mr. Jankowski is at his wry, confrontational, inquisitive best.