Channing shot to fame in Fighting and has mixed and matched his role over the past year with the likes of war movie Stop Loss and blockbuster G.I. Joe: The Rise of the Cobra.
But his latest movie Dear John, in which he stars alongside Amanda Seyfried, has brought Avatar's US box office reign to an end.
Speaking to Teen Hollywood the actor said: "It's definitely the favorite role that I've done. I feel like I did something different as far as the way my energy was. I tried to be still in the movie. That is something I haven't really done in a film. Most of my characters have been sort of kinetic and very physical. I don't know if it was harder; it was just different. All of the characters are hard in a certain way. It was challenging. But Lasse (Hallstrom, the director) just gives you the freedom to try anything. It doesn't make it difficult. It just makes it fun. It's a great way to make films because it takes the pressure off. We had a clear character description between him and I. As long as you stay with that blueprint, you'll know when you go off."
And there is plenty of work coming the actor's way this year with The Eagle of the Ninth and Son of No One both on the way.