The onscreen chemistry really works in this film. What was it like on the set?
It was fabulous. I'm so glad it actually came out that way because it was awesome to work with everyone. We all got along so wonderfully and I'm not just saying that because I know that's the clichéd thing to say. I've worked on stuff where somebody doesn't get along, or somebody has an ego, but there was nothing like that here. We all came together to make a National Lampoon film, hang out, and make a fun movie. I'm glad that came across on the screen.

I heard that director Walt Becker let you guys just go for it.
Walt was awesome. A couple of the scenes he just let us go, he's really about the moment so he really lets you just do it. Ryan and Tara are both so great at improv. We'd just go off and Walt would not stop the camera, he wouldn't say don't do that. He'd be like, “That was great. Do more of that if you want.”

Will there be a lot of those kind of scenes on the DVD?
Definitely. There were scenes that were cut out just because of time constraints and they couldn't physically fit them in. You're definitely going to see a lot of that on the DVD.

Is the gross-out humor your style of humor?
You know what? I have a really eclectic, wide range of humor. It's the same thing with the music that I listen to. I'd say definitely this is totally kind of my humor. One of the things that attracted me to this character was I'm really big on putting characters in situations where you wouldn't in a million years expect them to be. Like in “American Pie 2” when the parents walk in on Jason Biggs getting it on with that girl - how could you picture a parent saying something to their kid? And there's a lot of that in this movie. You've got these characters that you've maybe seen in another capacity in other films, like the two-line exchange student or the one-line guy with the uni-brow. I've never seen them in real roles, in juicy roles, and you see them in this movie and the interactions are so much fun. That's definitely what makes me laugh. It's more than just the fart jokes. I think this movie's got fart jokes with brains. It's got all those jokes but in a setting that even if you're not a fan of over-the-top humor, it's so awesome because it puts you in a situation that you're not expecting at all.

What are you doing next?
I'm working on a comedy CD right now. I write some sketch comedy so I'm trying to work on the comedy CD angle and I have a movie coming out over the Summer - hopefully, if they finish on time - called “Where's the Party Yaar?” It's more like an independent party movie. I'm also working on two scripts.

I was going to ask about working on scripts since you're working on a comedy CD.
Yeah, that's basically how I got the idea. I wrote 50 pages of a script and I'm like, “You know what? I'm going to test this out.” I read it for some people and they said, “Dude, these are like sketches. You should put that into a CD.” I tested it out with some people and it seemed to do well so I thought, why not? If anyone's interested in more info, they can visit my website at KalPennOnline.com.