The 37-year-old comedian-actor said that he feels unfulfilled starring in movies such as "Rock of Ages" and "Arthur", reported Contactmusic.
"I started to feel a little bit unfulfilled. I missed being around an audience, I missed being really honest and truthful. I'm going to continue to make films because I think they're prestigious and they can be really enjoyable.
"But I suppose as an artist you want to be engaged creatively by what you do in a real way, so yeah, certainly I feel more directly engaged by this show [BrandX].
"I just want to do something that's really, really authentic, that hasn't got any nonsense to it. I'm saying what I believe in -- and then we can work it out and cut out the things that are too mental and unbroadcastable," he said.