Just back from PROMETHEUS in IMAX 3D. Friend is a manager at the local plex where they just converted one screen to IMAX, so I saw it for free in a dress rehearsal for employees, family, and friends. I guess no one has many family or friends because there were only eight people there.
Very enjoyable. At this point I'm not even trying to figure out how good the film is or isn't. The 3D was wonderful, and all eight of us had a rollicking good time.