Yeah, the Dark Knight was all kinds of bad-ass. Heath Ledger was friggin amazing in that. He made Jack Nicholson's Joker look like Cesar Romero's Joker (from the original Batman tv show).
And dude, Falling Down is a masterpiece. That's some damn fine filmmaking. They did a really good job making you root for the guy the whole time, but then at the end they make you feel guilty about doing it. I also love how he gets a weapon upgrade like every five minutes Easily one of the best Michael Douglas films, and I don't generally like him all that much.
I'd have to say that my favorite film of all time is probably Blue Velvet. It's definitely David Lynch's best work (aside from some parts of Twin Peaks, maybe). I also really like Apocalypse Now, but I've seen it so many times that I can hardly watch it any more. Same with The Godfather. The original Planet of the Apes is up there on the list too. I can pretty much recite all of those movies from beginning to end.
As for good stuff I've seen lately:
The Host: A Korean monster movie with REALLY GOOD special effects. Some of the acting is kinda stupid (mainly the American characters) and the America-bashing is very obvious in the movie, but I forgive them because the movie is pretty damn good aside from that, and the monster is pretty sweet looking.
Sky Captain and the World of Tomorrow: Yeah, I know, it sounds kinda gay. But it's totally not. It's done in an old 1950's sci-fi comic book style, with boxy robots and ray guns, and it looks really slick.
And if you liked Pan's Labyrinth then I suggest you see The Devil's Backbone. It's also done by Guillermo del Toro, and is kinda like "part one" to Pan's Labyrinth. It's about a boy living in the same time (during the Spanish Civil War) but instead of there being a fantasy world the kid escapes to, it's a ghost story. The effects are really cool, but it's definitely more low-key than Pan's Labyrinth, so don't expect it to be as grand in scale.