I decided to go and watch this movie for two reasons - I like my Sci-Fi movies and this was my introduction to 3D.
Sat down and the coming soon movies started - Put my 1950s style 3d glasses on, first short was some animated cat movie, 3d ok, next short was Spiderman 3D ok (Too many things flying around the screen) Then the main movie started (Prometheus) - Wow the 3d blew me away and did enjoy the film.
Not sure why it was better (more expensive 3d cameras or more wider landscape shots).