2012’s “The Avengers” was an experiment of sorts. With audiences around the globe responding positively to comic book heroes in individual adventures, how would they react to a group effort? Fears of overkill were put to rest immediately, with “The Avengers” received rapturously by fans and critics, quickly becoming one of the top grossing movies of all time. After a three year break to tend to the specifics of these costumed men and women, the A-Team has reunited for “Avengers: Age of Ultron,” a darker, more internalized follow-up that still retains all the expected bang and boom. Writer/director Joss Whedon has pulled off an impressive feat here, sustaining the intensity of a ripping adventure yarn while digging into a few of the characters a little more deeply, finding fresh ground to cover in a more satisfying epic. Read the rest at Blu-ray.com