Now that "Iron Man," our first superhero flick of the summer, is out of the gate and tracking quite well at the box office (the experts now estimate the Downey starrer will cross the $100 million mark by Monday morning), we're free to focus on "The Dark Knight."

The second full trailer for the "Batman Begins" sequel hit the Interwebs today, and it's a doozie. The trailer gives us some of the first glimpses of the Joker and Harvey Dent in action, but fails to offer any footage of Two-Face. Looks like director Nolan is trying to keep this character under wraps. In an interview with Aaron Eckhart in the L.A. Times, the actor said, "I can tell you that, basically, when you look at Two-Face, you should get sick to your stomach. Being the guy under all that, well, that was a lot of fun for me. It's like you would feel if you met someone whose face had pretty much been ripped off or burned off with acid. I can't talk about it beyond that because I don't want to give away too much of the plans by Chris [Nolan]."

As for the Joker and Heath Ledger's performance, it's chilling. There have been rumors of a posthumous Oscar, which up until now I figured was people blowing things way out of proportion. Of course I haven't seen his whole performance yet, but what this trailer presents shows an unbelievably creepy transformation. 

"The Dark Knight" opens July 18th.