James Corden is taking over The Late Late Show in March 2015, but we haven’t really seen much of him on American TV, much less CBS, until now. Corden makes his first sit-down with Late Show with David Letterman tonight, and Letterman has a decade of experience hosting a talk show at 12:30 a.m. Corden’s father across the pond in Britain, on the other hand, wonders if it diminishes how big a deal his son’s new gig is.

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We’ll update with more clips after the program airs.