I tend to make movies about my peer group. I couldn't see myself now going back and making a movie about a bunch of college kids, necessarily. I kind of always operate in the things I'm observing around me, whether it's friends having babies now in my life or what have you.

I think any filmmaker looks back and thinks, 'Boy, if we only had four hours more on that day when the sun was going down,' or, 'If we only spent more time and went back.'

I think comedy directors tend to feel a need to justify the bad behavior, and I just never think that. I like bad behavior, I've always liked bad behavior, I'm a fan of bad behavior, and I don't think you have to justify bad behavior.

I think reviewers have become particularly venomous because, in a way, the power has been sucked from them. A 15-year-old can write a review on the Internet and it means as much as Roger Ebert's review, and that just makes Roger Ebert mad, so he comes out harder and stronger.

I'd love to do a movie with females in it, and not necessarily the female version of 'The Hangover,' but I'd love to. If I did it it'd star Juliette Lewis, because she's the funniest woman in the world. She's my favorite actress on the planet. If we did a character-based comedy about women, I don't see it out of my range.

I'm first and foremost a company man, surprising as that is. I love Warner Brothers. That's where I have a deal. That's where I've been for years. So I don't really interact too much with other studios and do things with other studios and I don't necessarily read scripts from other studios.

I'm not a huge fan of 3-D, though. Honestly, I think that movies are an immersive experience and an audience experience. There's nothing like seeing a film with 500 people in a theater. And there's something about putting on 3-D glasses that makes it a very singular experience for me. Suddenly I'm not connected to the audience anymore.

It's heartbreaking when you hear a kid buying a ticket for... I don't know, whatever movie you're up against. And you see them sneaking into your film. It's just heartbreaking. But in the spirit of full disclosure, that is what I did as an 11-year-old sneaking into 'Stripes.'

Reality television hasn't killed documentaries, because there are so many great documentaries still being made, but it certainly has changed the landscape. There is this breed of gimmicky documentary that is basically a reality show.

The worst thing you can do as a comedy director is be on set and think of something ridiculous, or an actor comes up to you with something ridiculous, and you say 'No, no that's too much.' Let's not worry if that's too much, let's shoot it, and then decide if that's too much when we see it.

There are movie sites that love movies and there are movie sites that are just bitter people that just hate movies. I find Movieline to be in the latter. The tone is bizarrely hateful.

There's a punk-rock attitude, clearly, to 'Hated.' There's even a punk-rock attitude to 'The Hangover,' I think. We start the movie with a Glenn Danzig song.

To be honest with you, since 'Ocean's 11,' 'The Hangover' has become a movie that defines Vegas. Anybody in Vegas will tell you that and I'm proud of it. I love that. I think 'Hangover' does Vegas right and I think that not only, as you said, it's the top-grossing R-rated comedy of all-time, it's also the top-grossing about Vegas or set in Vegas.

Well, it's so cheesy to say but you can't find a comedy director who makes movies for critics. When a movie does $580 million worldwide, I'm not saying that proves anything except people were enjoying the experience.

When I was younger I didn't really know what a director did: I knew I loved movies and I figured the actors made it up! And then when you get to 12 years old you start thinking, What does a director do? It was really an organic beginning: this looks like something I want to do, I can't believe people get paid to do it!

When I'm writing, I'm writing for a particular actor. When a lot of writers are writing, they're writing an idea. So they're not really writing in a specific voice.

With comedy especially, it feels like such a clear-cut thing to be a writer-director. There is so much nuance and tone in a comedy that it's hard to contextualise it in a script.

You know, if I started worrying about what the critics think, I'd never make another comedy. You couldn't pick a less funny group than critics - you couldn't find a more bitter group of people!

You're only as good as your body of work, and everybody has issues, whether it's Steven Spielberg or Martin Scorsese. I'm not comparing myself to those guys, but you learn more from the misses than the hits.

I think that 'Hangover II' is as funny as 'The Hangover I,' honest to God, but I think that it's a little bit darker, and the stakes are a little bit higher.