A few weeks ago, we posted the first pictures of Joseph Gordon-Levitt looking like a young Bruce Willis in the new science-fiction thriller Looper. Well, now we've got the movie's first trailer -- and it looks amazing!

Joseph plays an assassin who is tasked with killing people as they are sent back from the future. Things are going well until he is given the job of killing... himself! Joseph wore facial prosthetics and changed his voice to mirror Bruce's and the result is pretty eerie -- he really is believable as a young Bruce!

Click through to watch the full trailer!

In the new film Looper, Joseph Gordon-Levitt plays what could be his most interesting role yet -- Bruce Willis!

OK, he's not exactly playing Bruce Willis. He's playing a younger version of Bruce Willis' character in the same film -- and in order for that to be believable, Joseph had to undergo a major physical transformation for the role!

Check out the photos and read all about Joseph's daily three-hour transformative makeup process after the jump!

It’s not often that a movie comes along that has such an outstanding cast that just seeing them on the big screen together far overshadows anything else in the movie. When you have so many of Hollywood’s greatest actors, whose careers span several decades (a 93-year-old Ernest Borgnine shows up in top form), in so many roles that are tailor made for each of them, little else matters when it comes to box office gold!