Watch George Clooney on Stephen Colbert’s Debut 'Late Show'

September 9, 2015 5:38 AM EDT

George Clooney was the first guest on Stephen Colbert’s debut episode of The Late Show Tuesday night and the Hollywood star showed up without a project to promote.

“I’m just here to see you,” Clooney said to Colbert.

But this being a talk show, the guest had to have something to tout. So the show cut to a taped segment in which Clooney plugged a fake movie called Decision Strike, starring the 54-year-old actor and director as the “tough, no nonsense” U.N. Secretary-General. In one clip, Clooney answers a door wearing a white coat shouting, “Not now dammit, I’m diffusing a nuclear bomb.”

The pair also talked about Clooney’s humanitarian work in Darfur and naturally the conversation moved on to Clooney’s wife, the human rights lawyer Amal.

“What is it like to be the arm candy in a relationship?” asked Colbert. “She must say, like, ‘We’re going to meet extremely intelligent people tonight – these are not show folk. Just be shiny and pretty.”

Clooney nodded and said, “That’s mostly what I do.”