Today, DC unveiled the first trailer for their newest animated film, Justice League vs. Teen Titans.  The movie, which is debuting on DVD and Blu-Ray later this year, sees the two biggest superhero teams in the DC Universe face off against one another.  Via the synopsis:

The demonic forces of Trigon infiltrate the minds and bodies of the Justice League, turning the veteran super heroes against their youthful counterparts in the all-new DC Universe Original Movie.