From Wikipedia:
The Late Late Show is an American late-night television talk and variety show on CBS. It first aired in January 1995, with host Tom Snyder, followed by Craig Kilborn and Craig Ferguson. It is currently hosted by James Corden. The show originates from CBS Television City in Los Angeles.
The show differed from most of the other extant late-night talk shows during its first two decades on air in that it did not use a house band or an in-studio announcer. The traditional opening monologue also tended to be different from that of other late night shows tending to avoid jokes with punch lines during Snyder and Ferguson's tenures in favour of a short conversational introduction when Snyder was host and a cold opening featuring either a musical parody, audience interaction, a short sketch or interaction between Ferguson and Geoff Peterson followed by an anecdotal stream of consciousness introduction during most of Ferguson's years. While Craig Kilborn opened with a monologue it tended to be shorter than that used by other late shows. Corden's approach to the monologue has been a hybrid of topical punchline jokes and a stream of consciousness, although it is usually very short, as the show tends to favor longer recorded bits.