Avengers assemble! We discuss Joss Whedon\u2019s Marvel movie, which has been a hit with audiences and critics. But some members of our panel don\u2019t agree. How much do expectations factor in to one\u2019s enjoyment of a movie? Has the bar for summer action blockbusters been set too low by the likes of \u201cTransformers 2\u201d? Should every action-adventure movie aspire to be something more? Why is this the first time that the Hulk has been portrayed properly in a film? Grab your cosmic cubes and prepare for 90 minutes of movie-smashing discussion.