I did like the music. Gotta say that right up front. There wasn't enough of it, but what was there, I liked. It contributed to the intermittently dreamlike mood.
But otherwise? Cosmopolis is a pretentious mess, a string of disjointed scenes whose purpose feel less like narrative advancement and more like "let's bring in this actor now." The thematic continuity, such as it is, tries to seem like it's got its "finger on the pulse" of contemporary American issues like class warfare, sexual politics, and crazed lone gunmen. But if educators in future generations decide this movie represents our time, then I feel bad for the students forced to watch it.
Maybe my vitriol is partly due to the concept's inherent appeal and potential. Cosmopolis concerns a brilliant and amoral young Wall Street bazillionaire whose financial empire begins to collapse all around him while he spends most of the movie in his borderline-sci-fi limo surrounded by riots. AND it's directed in a sterile, sleek fashion by David Friggin' Cronenberg. I can imagine a universe where I love the shit out of that movie.