VIDEO : First 'Joker' Trailer Debuts

On Tuesday after debuting a pretty rad poster, DC's Joker movie has caught quite a lot of attention amongst fans. Comicbook.com reports that during Warner Bros. CinemaCon panel they released a teaser trailer for Joker ahead of it being officially released online tomorrow. The Joker trailer stars Joaquin Phoenix as Arthur Fleck, a stand-up comedian whose descent into madness turns him into the iconic villain.