It hit mainstream theaters on July 18th 2008, but the New York premiere was on the 14th. Check your calendars, because The Dark Knight turns ten years old today(ish).
A decade on, this is still my favorite superhero movie. Some have come relatively close, but don't touch the complete package that is The Dark Knight. There are so many iconic scenes and performances that it stands out as one of the best summer blockbusters ever in my mind. While many since have topped it in terms of sheer spectacle, none have touched it's depth, tensity, and emotional power. And you can't make a thread about TDK without mentioning Ledger's unforgettable performance.
So feel free to reminiscence about this movie or be that guy who says, "ACTUALLY this movie isn't very good because...". I will never forget the GASPS in the theatre during the pencil scene.