"We still need to book some guests," James said with a laugh.
Of course the 36-year-old funnyman and actor, who is inheriting the CBS late-night show from Craig Ferguson, has been burning the candle at both ends in anticipation for the big debut. He stopped by the TCA Press Tour in January to give the inside scoop into the type of program he hopes to create.
"The harder I work, the better chance I have at this show being successful," he said. "There's nothing more creative I don't think I'll ever do in my career than try to make an hour of television every day."
The Into The Woods star's way of presenting that content is expected to respect the traditional late-night talk show format, but with a twist. James is a big fan of indie artists and plans to use the show as a platform where little-known bands and comics can build a buzz.
James himself is also building buzz for the show with promos and a cheeky spread in this month's GQ.
The Late Late Show with James Corden premieres March 23 with guests Tom Hanks and Mila Kunis. Other guests in the first week include Kerry Washington, Will Ferrell and Kevin Hart. The Late Late Show airs weekdays at 12:35 a.m. ET/PT on CBS.