The cast in the film includes a fair amount of comedians like Zack Galifianakis (The Hangover), Jemaine Clement (Flight of the Concordes), and David Walliams (Little Britain), which helped tremendously to create a collaborative environment.

"There was a pretty fair amount of amazing actors. Jay (Roach) likes to have everybody collaborate, come up with their own stuff, and, there’s so many fun characters in this movie and really funny people that made things very easy.

"The script was in pretty good shape though, so we certainly did what was written but had chances to improvise" explains Rudd. But, how do you keep your objectivity after repeating funny scenes over and over? According to Carell the truth of the matter is that you never know.

"You have your barometer while you are filming that tells you that something may be funny, but you just don’t really know until you ultimately sit down in the theater and watch it with a bunch of other people.

"Being funny in a movie is completely different from being funny at a live performance where you get that immediate response from people. We sort of gauge off each other, off Jay (roach) and off of the crew and other actors. There are a lot of funny people involved, so you try to take everyone’s opinion into account."

For Paul all the people involved in the film were really funny so according to him you just hope for the best result. "There are so many things that you cannot control as an actor, from editing to the weather. There is all this crazy stuff that goes into it and hopefully it works."

With Steve´s resume, this movie is most likely to succeed. Having become successful in his forties the actor assumes fame under a completely different perspective. "I can’t determine whether it is better to be famous now than being in your twenties. I am just thankful that it happened, that I got this degree of success.

"I never dreamt of this, I never aspired to it. I just wanted to be a working actor, to make a living out of it. So this is all a surprise for me. Obviously being famous at my age is different than being famous in your twenties. I now have my priorities pretty firmly in place, and they are my family and, you know, my home life is what´s really important to me.

"So all this came as a surprise. Had it happened earlier in life, I might not have had the sense or maturity to cope with it, as I think you do later on" explains the actor.

According to Paul, Steve has not changed a bit since he first saw him in Anchorman. "He has not changed at all since then. He is just as normal, nice and kind as he used to be. He has no entourage, no assistant. He is definitely not the stereotypical movie star" adds Paul looking at Steve in the eye.

"Oh, enough of that please" answers Steve, playing the humble role.

Dinner For Schmucks is out now