I liked actions movies. Jean-Claude Van Damme was a major influence on me at that point in my life.

I was looking to do a comedy and found a group of guys that were really supportive of my interests in it, though it was a little outside of my wheel house. Strangely, I visited the set of Knocked Up and met Seth [Rogen] and Evan [Goldberg] and Judd[Apatow] and Shauna [Robertson].

It's just kind of seemed like a funny way to explore action movies, I guess. I mean, I'm a big fan of them always. It's always people who are very equipped to deal with the situations that they're thrown in. So, the notion just seemed funny, because it's, like, basically stoners are kind of the last guys in the world who are equipped to deal with that. And the humor possibilities just seemed somewhat endless.

I'm intimidated anytime I work with someone who's directly outside my very insulated group of friends.

One of the big things that we wanted to do was trying to kick out a car window as you're driving after it's been shattered obstructing your view. I mean, that's - I can't count how many movies I've seen that in, and we just thought, you know, like, it could be funny if it just kind of goes wrong and this foot just kind of punctures through the window and gets stuck.

It was a great time. We did hurt ourselves [on Pineapple Express set]. [James] Franco cracked his face open.[Danny ] McBride cracked the back of his head open. I punched Amber[Heard] in the face just to get her in the mood for things. 'Welcome to the set!' But it was a lot of fun. I loved it.

I'm not entirely comfortable saying I'm an actor, because it seems like a very weird, almost dorky thing to say you are. I laugh after every take just out of the discomfort I feel that I'm even on film. It's an awkward thing for me to be doing. Once we get going, it's always fine, and as we're shooting, I'm never thinking about it. I'd say that all my time in front of the camera is equally uncomfortable for me.