Chris Hemsworth, Tom Hiddleston, Scarlett Johansson, and Mark Ruffalo were at Rome's De Russie Hotel on Saturday for a stop on The Avengers press tour before the guys headed to Germany, sans Scarlett, for yet another photocall today. The foursome traveled abroad to promote the superhero movie all last week, kicking things off with an appearance in Moscow before moving onto London and then Italy together. The Marvel movie is expected to enjoy a big debut at the box office. Early reviews for The Avengers have been overwhelmingly positive and the movie is estimated to earn as much as The Dark Knight and The Hunger Games each did in their opening weekends. That could easily make The Avengers the biggest first-weekend earner among superhero movies to date when it hits theaters on May 4.